extend .gitignore from flutter official

.gitignore

@@ -1,5 +1,6 @@
 # Miscellaneous
 *.class
+*.lock
 *.log
 *.pyc
 *.swp
@@ -15,10 +16,14 @@
 *.iws
 .idea/
 
-# The .vscode folder contains launch configuration and tasks you configure in
-# VS Code which you may wish to be included in version control, so this line
-# is commented out by default.
-#.vscode/
+# Visual Studio Code related
+.classpath
+.project
+.settings/
+.vscode/
+
+# packages file containing multi-root paths
+.packages.generated
 
 # Flutter/Dart/Pub related
 **/doc/api/
@@ -30,20 +35,79 @@
 .pub-cache/
 .pub/
 /build/
+flutter_*.png
+linked_*.ds
+unlinked.ds
+unlinked_spec.ds
 
 # Web related
 lib/generated_plugin_registrant.dart
 
+# Android Studio will place build artifacts here
+/android/app/debug
+/android/app/profile
+/android/app/release
+
+# Android related
+**/android/**/gradle-wrapper.jar
+**/android/.gradle
+**/android/captures/
+**/android/gradlew
+**/android/gradlew.bat
+**/android/local.properties
+**/android/**/GeneratedPluginRegistrant.java
+**/android/key.properties
+*.jks
+
+# iOS/XCode related
+**/ios/**/*.mode1v3
+**/ios/**/*.mode2v3
+**/ios/**/*.moved-aside
+**/ios/**/*.pbxuser
+**/ios/**/*.perspectivev3
+**/ios/**/*sync/
+**/ios/**/.sconsign.dblite
+**/ios/**/.tags*
+**/ios/**/.vagrant/
+**/ios/**/DerivedData/
+**/ios/**/Icon?
+**/ios/**/Pods/
+**/ios/**/.symlinks/
+**/ios/**/profile
+**/ios/**/xcuserdata
+**/ios/.generated/
+**/ios/Flutter/.last_build_id
+**/ios/Flutter/App.framework
+**/ios/Flutter/Flutter.framework
+**/ios/Flutter/Flutter.podspec
+**/ios/Flutter/Generated.xcconfig
+**/ios/Flutter/ephemeral
+**/ios/Flutter/app.flx
+**/ios/Flutter/app.zip
+**/ios/Flutter/flutter_assets/
+**/ios/Flutter/flutter_export_environment.sh
+**/ios/ServiceDefinitions.json
+**/ios/Runner/GeneratedPluginRegistrant.*
+
+# macOS
+**/macos/Flutter/GeneratedPluginRegistrant.swift
+
+# Coverage
+coverage/
+
 # Symbolication related
 app.*.symbols
 
 # Obfuscation related
 app.*.map.json
 
-# Android Studio will place build artifacts here
-/android/app/debug
-/android/app/profile
-/android/app/release
+# Exceptions to above rules.
+!**/ios/**/default.mode1v3
+!**/ios/**/default.mode2v3
+!**/ios/**/default.pbxuser
+!**/ios/**/default.perspectivev3
+!/packages/flutter_tools/test/data/dart_dependencies_test/**/.packages
+!/dev/ci/**/Gemfile.lock
 
 #amplify
 amplify/\#current-cloud-backend