chore: unify desktop and mobile databases (#764)

* chore: unify desktop and mobile databases

- migrate `package:sqflite_flutter` to `sqlcipher_flutter_libs`
- use FFI for all SQLite operations
- use `SQfLiteEncryptionHelper` for database encryption
- enforce encryption for new SQLite datbase implementation
- migrate existing SQLite databases
 - encrypt unencrypted ones
 - migrate database locations to unified approach
- drop dependency on sqlite

Signed-off-by: The one with the braid <info@braid.business>

* chore: add sqlcipher to macos CI

Signed-off-by: The one with the braid <info@braid.business>

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Signed-off-by: The one with the braid <info@braid.business>

snap/snapcraft.yaml

@@ -77,8 +77,7 @@ parts:
     stage-packages:
       - libsecret-1-dev
       - libjsoncpp-dev
-      - libsqlite3-0
-      - libsqlite3-dev
+      - libssl-dev
 
 slots:
   dbus-svc:
@@ -89,7 +88,7 @@ slots:
 apps:
   fluffychat:
     command: fluffychat
-    extensions: [gnome]
+    extensions: [ gnome ]
     plugs:
       - audio-playback
       - desktop