Release notes workflow WIP

[vzarytovskii]

Ok, let's make everyone's life miserable and require to fill in release notes every time Compiler, FSharp.Core, LanguageFeatures or VS are changed.

Will help us to generate proper release notes though.

[github-actions]

❗ Release notes required

@vzarytovskii,

Caution

No release notes found for the following paths.

Please make sure to add an entry with short succint description of the change as well as link to this pull request.

Examples:
- Respect line limit in quick info popup - https://github.com/dotnet/fsharp/pull/16208
- More inlines for Result module - https://github.com/dotnet/fsharp/pull/16106
- Miscellaneous fixes to parens analysis - https://github.com/dotnet/fsharp/pull/16262

If you believe that release notes are not necessary for this PR, please add "NO_RELEASE_NOTES" label to the pull request.

You can open this PR in browser to add release notes: open in github.dev

Change path	Release notes path	Description
vsintegration/src	docs/release-notes/VisualStudio/17.9.md	No release notes found or release notes format is not correct

---

✅ Found changes and release notes in following paths:

Warning

No PR link found in some release notes, please consider adding it.

Change path	Release notes path	Description
src/FSharp.Core	docs/release-notes/FSharp.Core/8.0.200.md	No current pull request URL (#7) found, please consider adding it
src/Compiler	docs/release-notes/FSharp.Compiler.Service/8.0.200.md	No current pull request URL (#7) found, please consider adding it