Support linting yaml files

[Rexios80]

Is your feature request related to a problem? Please describe.
I'm trying to add custom_lint integration to https://pub.dev/packages/git_dependency_prs

Describe the solution you'd like
Support linting yaml files

Describe alternatives you've considered
Linting yaml files kind of works, but the plugin doesn't get notified about updates to yaml files. I tried adding *.yaml to the interestingFiles field here, but that somehow broke yaml file linting completely.

dart_custom_lint/packages/custom_lint/lib/src/v2/custom_lint_analyzer_plugin.dart

Line 330 in b50bd2b

['*.dart'],

Ideally we pass in the globs from LintRule.filesToAnalyze, but I was just trying to get a proof of concept working.

[rrousselGit]

Duplicate of #263