[Theme] Add initial dark theme

Took 1 hour 10 minutes

lib/i18n/i18n.dart

@@ -569,6 +569,16 @@ class I18n {
 
   String get signUp => Intl.message("Sign up");
 
+  String get changeTheme => Intl.message("Change your style");
+
+  String get systemTheme => Intl.message("System");
+
+  String get lightTheme => Intl.message("Light");
+
+  String get darkTheme => Intl.message("Dark");
+
+  String get useAmoledTheme => Intl.message("Use Amoled compatible colors?");
+
   String get sourceCode => Intl.message("Source code");
 
   String get startYourFirstChat => Intl.message("Start your first chat :-)");

lib/i18n/intl_de.arb

@@ -892,6 +892,31 @@
     "type": "text",
     "placeholders": {}
   },
+  "Change your style": "Change your style",
+  "@Change your style": {
+    "type": "text",
+    "placeholders": {}
+  },
+  "System": "System",
+  "@System": {
+    "type": "text",
+    "placeholders": {}
+  },
+  "Light": "Hell",
+  "@Light": {
+    "type": "text",
+    "placeholders": {}
+  },
+  "Dark": "Dunkel",
+  "@Dark": {
+    "type": "text",
+    "placeholders": {}
+  },
+  "Use Amoled compatible colors?": "Amoled optimierte Farben verwenden?",
+  "@Use Amoled compatible colors?": {
+    "type": "text",
+    "placeholders": {}
+  },
   "Source code": "Quellcode",
   "@Source code": {
     "type": "text",

lib/i18n/intl_messages.arb

@@ -892,6 +892,31 @@
     "type": "text",
     "placeholders": {}
   },
+  "Change your style": "Change your style",
+  "@Change your style": {
+    "type": "text",
+    "placeholders": {}
+  },
+  "System": "System",
+  "@System": {
+    "type": "text",
+    "placeholders": {}
+  },
+  "Light": "Light",
+  "@Light": {
+    "type": "text",
+    "placeholders": {}
+  },
+  "Dark": "Dark",
+  "@Dark": {
+    "type": "text",
+    "placeholders": {}
+  },
+  "Use Amoled compatible colors?": "Use Amoled compatible colors?",
+  "@Use Amoled compatible colors?": {
+    "type": "text",
+    "placeholders": {}
+  },
   "Source code": "Source code",
   "@Source code": {
     "type": "text",

lib/i18n/messages_de.dart

@@ -150,6 +150,7 @@ class MessageLookup extends MessageLookupByLibrary {
     "Ban from chat" : MessageLookupByLibrary.simpleMessage("Aus dem Chat verbannen"),
     "Banned" : MessageLookupByLibrary.simpleMessage("Banned"),
     "Change the name of the group" : MessageLookupByLibrary.simpleMessage("Gruppenname ändern"),
+    "Change your style" : MessageLookupByLibrary.simpleMessage("Change your style"),
     "Changelog" : MessageLookupByLibrary.simpleMessage("Changelog"),
     "Chat details" : MessageLookupByLibrary.simpleMessage("Gruppeninfo"),
     "Choose a username" : MessageLookupByLibrary.simpleMessage("Wähle einen Benutzernamen"),
@@ -166,6 +167,7 @@ class MessageLookup extends MessageLookupByLibrary {
     "Create" : MessageLookupByLibrary.simpleMessage("Create"),
     "Create account now" : MessageLookupByLibrary.simpleMessage("Account jetzt erstellen"),
     "Create new group" : MessageLookupByLibrary.simpleMessage("Neue Gruppe"),
+    "Dark" : MessageLookupByLibrary.simpleMessage("Dunkel"),
     "Delete" : MessageLookupByLibrary.simpleMessage("Löschen"),
     "Delete message" : MessageLookupByLibrary.simpleMessage("Nachricht löschen"),
     "Discard picture" : MessageLookupByLibrary.simpleMessage("Bild verwerfen"),
@@ -199,6 +201,7 @@ class MessageLookup extends MessageLookupByLibrary {
     "Leave" : MessageLookupByLibrary.simpleMessage("Verlassen"),
     "Left the chat" : MessageLookupByLibrary.simpleMessage("Hat den Chat verlassen"),
     "License" : MessageLookupByLibrary.simpleMessage("Lizenz"),
+    "Light" : MessageLookupByLibrary.simpleMessage("Hell"),
     "Loading... Please wait" : MessageLookupByLibrary.simpleMessage("Lade ... Bitte warten"),
     "Login" : MessageLookupByLibrary.simpleMessage("Login"),
     "Logout" : MessageLookupByLibrary.simpleMessage("Logout"),
@@ -244,12 +247,14 @@ class MessageLookup extends MessageLookupByLibrary {
     "Source code" : MessageLookupByLibrary.simpleMessage("Quellcode"),
     "Start your first chat :-)" : MessageLookupByLibrary.simpleMessage("Starte deinen ersten Chat :-)"),
     "Sunday" : MessageLookupByLibrary.simpleMessage("Sonntag"),
+    "System" : MessageLookupByLibrary.simpleMessage("System"),
     "Tap to show menu" : MessageLookupByLibrary.simpleMessage("Tippen, um das Menü anzuzeigen"),
     "This room has been archived." : MessageLookupByLibrary.simpleMessage("Dieser Raum wurde archiviert."),
     "Thursday" : MessageLookupByLibrary.simpleMessage("Donnerstag"),
     "Try to send again" : MessageLookupByLibrary.simpleMessage("Nochmal versuchen zu senden"),
     "Tuesday" : MessageLookupByLibrary.simpleMessage("Tuesday"),
     "Unmute chat" : MessageLookupByLibrary.simpleMessage("Stumm aus"),
+    "Use Amoled compatible colors?" : MessageLookupByLibrary.simpleMessage("Amoled optimierte Farben verwenden?"),
     "Username" : MessageLookupByLibrary.simpleMessage("Benutzername"),
     "Visibility of the chat history" : MessageLookupByLibrary.simpleMessage("Sichtbarkeit des Chat-Verlaufs"),
     "Visible for all participants" : MessageLookupByLibrary.simpleMessage("Sichtbar für alle Teilnehmer"),

lib/i18n/messages_messages.dart

@@ -150,6 +150,7 @@ class MessageLookup extends MessageLookupByLibrary {
     "Ban from chat" : MessageLookupByLibrary.simpleMessage("Ban from chat"),
     "Banned" : MessageLookupByLibrary.simpleMessage("Banned"),
     "Change the name of the group" : MessageLookupByLibrary.simpleMessage("Change the name of the group"),
+    "Change your style" : MessageLookupByLibrary.simpleMessage("Change your style"),
     "Changelog" : MessageLookupByLibrary.simpleMessage("Changelog"),
     "Chat details" : MessageLookupByLibrary.simpleMessage("Chat details"),
     "Choose a username" : MessageLookupByLibrary.simpleMessage("Choose a username"),
@@ -166,6 +167,7 @@ class MessageLookup extends MessageLookupByLibrary {
     "Create" : MessageLookupByLibrary.simpleMessage("Create"),
     "Create account now" : MessageLookupByLibrary.simpleMessage("Create account now"),
     "Create new group" : MessageLookupByLibrary.simpleMessage("Create new group"),
+    "Dark" : MessageLookupByLibrary.simpleMessage("Dark"),
     "Delete" : MessageLookupByLibrary.simpleMessage("Delete"),
     "Delete message" : MessageLookupByLibrary.simpleMessage("Delete message"),
     "Discard picture" : MessageLookupByLibrary.simpleMessage("Discard picture"),
@@ -199,6 +201,7 @@ class MessageLookup extends MessageLookupByLibrary {
     "Leave" : MessageLookupByLibrary.simpleMessage("Leave"),
     "Left the chat" : MessageLookupByLibrary.simpleMessage("Left the chat"),
     "License" : MessageLookupByLibrary.simpleMessage("License"),
+    "Light" : MessageLookupByLibrary.simpleMessage("Light"),
     "Loading... Please wait" : MessageLookupByLibrary.simpleMessage("Loading... Please wait"),
     "Login" : MessageLookupByLibrary.simpleMessage("Login"),
     "Logout" : MessageLookupByLibrary.simpleMessage("Logout"),
@@ -244,12 +247,14 @@ class MessageLookup extends MessageLookupByLibrary {
     "Source code" : MessageLookupByLibrary.simpleMessage("Source code"),
     "Start your first chat :-)" : MessageLookupByLibrary.simpleMessage("Start your first chat :-)"),
     "Sunday" : MessageLookupByLibrary.simpleMessage("Sunday"),
+    "System" : MessageLookupByLibrary.simpleMessage("System"),
     "Tap to show menu" : MessageLookupByLibrary.simpleMessage("Tap to show menu"),
     "This room has been archived." : MessageLookupByLibrary.simpleMessage("This room has been archived."),
     "Thursday" : MessageLookupByLibrary.simpleMessage("Thursday"),
     "Try to send again" : MessageLookupByLibrary.simpleMessage("Try to send again"),
     "Tuesday" : MessageLookupByLibrary.simpleMessage("Tuesday"),
     "Unmute chat" : MessageLookupByLibrary.simpleMessage("Unmute chat"),
+    "Use Amoled compatible colors?" : MessageLookupByLibrary.simpleMessage("Use Amoled compatible colors?"),
     "Username" : MessageLookupByLibrary.simpleMessage("Username"),
     "Visibility of the chat history" : MessageLookupByLibrary.simpleMessage("Visibility of the chat history"),
     "Visible for all participants" : MessageLookupByLibrary.simpleMessage("Visible for all participants"),