Updated some components and changed to run on .NET 8.0

[Thorium]

If you want to build on both VS2022 (.NET Framework compatible, using .NET Standard 2.0) and dotnet.exe (e.g. VSCode) with latest .NET 8.0 (or 9.0, whatever), the TP has to target both.

F# 8 has some performance improvements over F# 6.

However .NET 8.0 also needed Fake update, thus the other changes.