Update .gitignore to new `dart_tool` pub cache (#585)
Update .gitignore to new `dart_tool` pub cache (#585)


flutter/plugins,flutter/plugins,tvolkert/plugins,flutter/plugins,flutter/plugins,mehmetf/plugins,mehmetf/plugins,mehmetf/plugins,flutter/plugins,flutter/plugins,tvolkert/plugins,tvolkert/plugins,flutter/plugins,mehmetf/plugins,tvolkert/plugins,flutter/plugins,mehmetf/plugins