add e2e testing (#167)

Reviewed-on: #167

pubspec.lock

@@ -58,7 +58,7 @@ packages:
     source: hosted
     version: "1.0.4"
   app_links_platform_interface:
-    dependency: transitive
+    dependency: "direct dev"
     description:
       name: app_links_platform_interface
       sha256: "7546f09a6e93f4a2df2fe2bd40a5c6c64310ac461b036d82b43033be7a59f809"
@@ -471,6 +471,11 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "0.9.1"
+  flutter_driver:
+    dependency: transitive
+    description: flutter
+    source: sdk
+    version: "0.0.0"
   flutter_file_dialog:
     dependency: "direct main"
     description:
@@ -581,7 +586,7 @@ packages:
     source: hosted
     version: "2.3.2"
   flutter_test:
-    dependency: transitive
+    dependency: "direct dev"
     description: flutter
     source: sdk
     version: "0.0.0"
@@ -623,6 +628,11 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "3.1.0"
+  fuchsia_remote_debug_protocol:
+    dependency: transitive
+    description: flutter
+    source: sdk
+    version: "0.0.0"
   geoclue:
     dependency: transitive
     description:
@@ -839,6 +849,11 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "0.2.2"
+  integration_test:
+    dependency: "direct dev"
+    description: flutter
+    source: sdk
+    version: "0.0.0"
   intl:
     dependency: "direct main"
     description:
@@ -1552,6 +1567,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "0.4.1"
+  sync_http:
+    dependency: transitive
+    description:
+      name: sync_http
+      sha256: "7f0cd72eca000d2e026bcd6f990b81d0ca06022ef4e32fb257b30d3d1014a961"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.3.1"
   synchronized:
     dependency: transitive
     description:
@@ -1715,7 +1738,7 @@ packages:
     source: hosted
     version: "3.2.6"
   url_launcher_platform_interface:
-    dependency: transitive
+    dependency: "direct dev"
     description:
       name: url_launcher_platform_interface
       sha256: "552f8a1e663569be95a8190206a38187b531910283c3e982193e4f2733f01029"
@@ -1843,6 +1866,14 @@ packages:
       url: "https://github.com/google/webcrypto.dart"
     source: git
     version: "0.6.2-wip"
+  webdriver:
+    dependency: transitive
+    description:
+      name: webdriver
+      sha256: "28b82ec894fed45dd71c23ba62d1af973ed97dd59a4f5790a4d38b0b13e5657e"
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.2.0"
   webpush_encryption:
     dependency: transitive
     description: