added content.json

.gitignore

@@ -46,6 +46,23 @@ analysis_benchmark.json
 # packages file containing multi-root paths
 .packages.generated
 
+# Flutter/Dart/Pub related
+**/doc/api/
+.dart_tool/
+.flutter-plugins
+/dev/docs/api_docs.zip
+/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/
@@ -136,4 +153,7 @@ app.*.symbols
 !**/ios/**/default.perspectivev3
 !/packages/flutter_tools/test/data/dart_dependencies_test/**/.packages
 !/dev/ci/**/Gemfile.lock
-!.vscode/settings.json
+!.vscode/settings.json
+
+# Custom
+content.json