Add Dart Analyzer Action

[vbuberen]

Description

This PR adds https://github.com/invertase/github-action-dart-analyzer Action to automatically add review comments to PRs opened in this repository. I believe it will help maintainers to get better visual feedback, so less people will ignore analyzer issues due to no requirement to go through Actions logs.

Checklist

Before you create this PR confirm that it meets all requirements listed below by checking the relevant checkboxes ([x]).
This will ensure a smooth and quick review process.

• I read the Contributor Guide and followed the process outlined there for submitting PRs.
• My PR includes unit or integration tests for all changed/updated/fixed behaviors (See Contributor Guide).
• All existing and new tests are passing.
• I updated the version in pubspec.yaml and CHANGELOG.md.
• I updated/added relevant documentation (doc comments with ///).
• The analyzer (flutter analyze) does not report any problems on my PR.
• I read and followed the Flutter Style Guide.
• I am willing to follow-up on review comments in a timely manner.

Breaking Change

Does your PR require plugin users to manually update their apps to accommodate your change?

• Yes, this is a breaking change (please indicate a breaking change in CHANGELOG.md and increment major revision).
• No, this is not a breaking change.

[elias8]

LGTM 👍

[vbuberen]

Increased time limit for Analyzer job, since it looks like 15 mins isn't enough.

[vbuberen]

Had issue with working-directory specified for added Action and this is why the job was canceled due to timeout. Finally resolved the issue and returned 15 mins limit back.

[elias8]

Had issue with working-directory specified for added Action and this is why the job was canceled due to timeout. Finally resolved the issue and returned 15 mins limit back.

I was trying to figure out what went wrong. Thanks for fixing.