Migrate to .NET 8 (#5887)

* Change TargetFramework to net8.0

* Disable info messages

* Fix warings

* Disable additional analyzer messages

* Fix typo

* Add whitespace

* Fix ref vs in warnings

* Use explicit [In] on array parameters

* No need to guard Remove with Contains

* Use 'ArgumentOutOfRangeException.ThrowIf...' instead of explicitly throwing a new exception instance

* Bump .NET SDK version

* Enable JsonSerializerIsReflectionEnabledByDefault

* Use 8.0.100 GA release

* Bump System package versions

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Co-authored-by: Zoltan Csizmadia <Zoltan.Csizmadia@vericast.com>