Add support for .Net 8.0

[OsirisTerje]

• Updated to not crash when .net 8 is installed
• Updated building information

[manfred-brands]

As the runner doesn't seem to really do anything with this, is it possible to cherry pick my commit to main from 11 months ago where the dependency was removed completely?

See:
Author: Manfred Brands manfred-brands@users.noreply.github.com
Date: 11 months ago (31/03/2022 12:15:58)
Commit hash: d5648b9
Child: 100b434
Parent: 0d5ea36

Removed ClrVersion from RuntimeFramework

Decision logic moved to Runtime class.

[OsirisTerje]

@manfred-brands I wasn't really aware of this, @CharliePoole made some comments about it, but I didn't know it had been done. Will do this.

UPDATE:
When doing this I do get quite a bunch of merge conflicts. AgentProcess.cs, RuntimeFrameworkservices.cs I accepted all from incoming. Not sure if this is all ok. I don't have proper control over this.

SORRY: This didn't work out. Too many merges, and ended with 43 compiler errors, and I have no clue what I am actually changing here.

It is not possible to cherry-pick only that commit. The class/file Runtime.cs was created March 1st, #a5b701c , and there are others in between which seem to be involved.