chore: Update .gitignore and remove files

Using https://github.com/flutter/plugins/blob/master/.gitignore
and https://github.com/flutter/flutter/blob/master/.gitignore

Author: nstrelow

.gitignore

@@ -1,14 +1,48 @@
 .DS_Store
 .atom/
-.idea
+.idea/
+.vscode/
+
 .packages
-.dart_tool/
 .pub/
-build/
-ios/.generated/
-packages
+.dart_tool/
 pubspec.lock
-.iml
+flutter_export_environment.sh
+
+examples/all_plugins/pubspec.yaml
+
+Podfile
 Podfile.lock
-chewie.iml
-example/ios/Flutter/flutter_export_environment.sh
+Pods/
+.symlinks/
+**/Flutter/App.framework/
+**/Flutter/ephemeral/
+**/Flutter/Flutter.framework/
+**/Flutter/Generated.xcconfig
+**/Flutter/flutter_assets/
+
+ServiceDefinitions.json
+xcuserdata/
+**/DerivedData/
+
+local.properties
+keystore.properties
+.gradle/
+gradlew
+gradlew.bat
+gradle-wrapper.jar
+.flutter-plugins-dependencies
+*.iml
+
+generated_plugin_registrant.dart
+GeneratedPluginRegistrant.h
+GeneratedPluginRegistrant.m
+generated_plugin_registrant.cc
+GeneratedPluginRegistrant.java
+GeneratedPluginRegistrant.swift
+build/
+.flutter-plugins
+
+.project
+.classpath
+.settings

android.iml

@@ -1,13 +1,120 @@
+# Miscellaneous
+*.class
+*.lock
+*.log
+*.pyc
+*.swp
 .DS_Store
 .atom/
-.idea
+.buildlog/
+.history
+.svn/
+
+# IntelliJ related
+*.iml
+*.ipr
+*.iws
+.idea/
+
+# Visual Studio Code related
+.classpath
+.project
+.settings/
 .vscode/
+
+# Flutter repo-specific
+/bin/cache/
+/bin/internal/bootstrap.bat
+/bin/internal/bootstrap.sh
+/bin/mingit/
+/dev/benchmarks/mega_gallery/
+/dev/bots/.recipe_deps
+/dev/bots/android_tools/
+/dev/devicelab/ABresults*.json
+/dev/docs/doc/
+/dev/docs/flutter.docs.zip
+/dev/docs/lib/
+/dev/docs/pubspec.yaml
+/dev/integration_tests/**/xcuserdata
+/dev/integration_tests/**/Pods
+/packages/flutter/coverage/
+version
+analysis_benchmark.json
+
+# packages file containing multi-root paths
+.packages.generated
+
+# Flutter/Dart/Pub related
+**/doc/api/
+.dart_tool/
+.flutter-plugins
+.flutter-plugins-dependencies
+**/generated_plugin_registrant.dart
 .packages
+.pub-cache/
 .pub/
 build/
-ios/.generated/
-packages
-pubspec.lock
-.flutter-plugins
-Podfile.lock
-lib/generated_plugin_registrant.dart
+flutter_*.png
+linked_*.ds
+unlinked.ds
+unlinked_spec.ds
+
+# 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/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
+**/macos/Flutter/Flutter-Debug.xcconfig
+**/macos/Flutter/Flutter-Release.xcconfig
+**/macos/Flutter/Flutter-Profile.xcconfig
+
+# Coverage
+coverage/
+
+# Symbols
+app.*.symbols
+
+# 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