[Dot Shorthands] Experiment flag

[kallentu]

Add an experiment flag to Dart and put all implementation code under it.

The implementation issue for a potential new language feature being considered: dart-lang/language#357

Checklist for experiment flag

• Add an experiment flag named dot-shorthands
• Eventually, add an experiment and release version to gate the feature.
• Then enable by default when ready to release.

[dart-github-bot]

Summary: This issue proposes adding an experiment flag to Dart for enum shorthands, a potential new language feature. The flag would allow developers to opt-in to the feature and provide a mechanism for gradual rollout and testing.

[mit-mit]

@kallentu I think this (or at least first two checklist entries) is done?

[kallentu]

Yep, first two are complete. Will be waiting on the last checklist item until closing this.