Workflow to format and lint code

[Tetrax-10]

No code has been changed, its all just formatted except 3 css files.

Please don't merge any pr before this pr. It will cause huge conflicts.

These files had errors for ages and no one noticed it. Fortunately now we have eslint and prettier to detect it.

1. Theme-ModernDark.css - line 100
2. Theme-Night.css -line 92
3. Theme-PulsarLight.css - line 589

The workflow has been fully tested on this fork: Tetrax-10/CommunityScripts-Test

PR test - https://github.com/Tetrax-10/CommunityScripts-Test/pull/1

[Tetrax-10]

The failed workflow is from the stashapp/CommunityScripts main branch and not from this pr branch

[WithoutPants]

I appreciate the effort made here, but I disagree with some of the decisions that have been made.

I don't like the idea of formatting and committing code automatically. This has generally been the responsibility of the author, and in the other repos the actions only validate that the format is correct. Refer to how it's done in the UI in the stash repo.

The prettier options used here are inconsistent with those in the other repositories. We use a tab width of 2 elsewhere. Prettier has been applied to the github yml files, and I don't think it's an improvement.

I'm not sure that applying prettier to the .md files is a good idea.

[Tetrax-10]

I will re-implement this feature by adhering to those conditions and submit a new pull request.