chore: Add initial integration tests

pubspec.lock

@@ -56,7 +56,7 @@ packages:
       name: archive
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "3.3.0"
+    version: "3.1.6"
   args:
     dependency: transitive
     description:
@@ -505,6 +505,11 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "3.3.0"
+  flutter_driver:
+    dependency: transitive
+    description: flutter
+    source: sdk
+    version: "0.0.0"
   flutter_highlight:
     dependency: transitive
     description:
@@ -716,6 +721,11 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "2.1.2"
+  fuchsia_remote_debug_protocol:
+    dependency: transitive
+    description: flutter
+    source: sdk
+    version: "0.0.0"
   future_loading_dialog:
     dependency: "direct main"
     description:
@@ -877,6 +887,11 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "4.6.0"
+  integration_test:
+    dependency: "direct dev"
+    description: flutter
+    source: sdk
+    version: "0.0.0"
   intl:
     dependency: "direct main"
     description:
@@ -1621,6 +1636,13 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "0.2.0"
+  sync_http:
+    dependency: transitive
+    description:
+      name: sync_http
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "0.3.0"
   synchronized:
     dependency: transitive
     description:
@@ -1957,6 +1979,13 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "2.1.0"
+  webdriver:
+    dependency: transitive
+    description:
+      name: webdriver
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "3.0.0"
   webkit_inspection_protocol:
     dependency: transitive
     description: