Clean up CI workflows

[gonzaloriestra]

WHY are these changes introduced?

The current shopify-cli workflow is too messy and has some problems.

WHAT is this pull request doing?

• Simplifies the file by extracting code to 2 new files: cli-manual and cli-main
• Knip and lint failures are now shown right there, instead of spreading them as inline-comments. Many people were confused by this, because the errors weren't easy to find.

Knip	Lint

• Some tasks were incorrectly grouped under CLA

• Tests were being skipped on PRs only including changes in MD files, but the tests are required to merge, so it was confusing as well. Now it always runs them.
• Renamed some jobs to simplify and make it clearer. Removed unneeded shopify-cli references and clarified what other tasks like knip do.
• Removed some checks about dependabot or forks. As knip and lint don't need to comment on the PR anymore, the required checks will work everywhere.

Once this is merged, I'll update the required checks in the repository settings.

How to test your changes?

CI

Measuring impact

How do we know this change was effective? Please choose one:

• n/a - this doesn't need measurement, e.g. a linting rule or a bug-fix
• Existing analytics will cater for this addition
• PR includes analytics changes to measure impact

Checklist

• I've considered possible cross-platform impacts (Mac, Linux, Windows)
• I've considered possible documentation changes

[github-actions]

Coverage report

St.❔	Category	Percentage	Covered / Total
🟡	Statements	79.23% (+0.01% 🔼)	13582/17143
🟡	Branches	73.11% (+0.01% 🔼)	6631/9070
🟡	Functions	79.37%	3505/4416
🟡	Lines	79.58% (+0.01% 🔼)	12827/16118

Test suite run success

3356 tests passing in 1372 suites.

Report generated by 🧪jest coverage report action from 0eca8eb

[gonzaloriestra]

I want to rename this to cli-pr.yml, but GH is not showing properly the diff in that case, so I'll change it in another PR.