Better inherit error reporting

[edgarfgp]

Description

Bette error reporting for inherit.

Before

After

typeIA=interfaceendtypeClass()=inherit IA
^^^^^^^^^[<Sealed>]typeBaseClass()=classendtypeClass2()=inherit BaseClass()^^^^^^^^^// Another interface typeTK_I_005=abstractM :unit->unit[<Struct>]typeTK_I_006b=inherit TK_I_005
^^^^^^^^

Checklist

• Test cases added
• Release notes entry updated

[github-actions]

❗ Release notes required

---

✅ Found changes and release notes in following paths:

Change path	Release notes path	Description
src/Compiler	docs/release-notes/.FSharp.Compiler.Service/9.0.200.md

[edgarfgp]

This is ready

[psfinaki]

Good stuff Edgar, thanks!

I thought - maybe you can add a small paragraph to the docs about improving our diagnostics the way you do - and reference some of your PRs. That could be useful :)