* [WIP] Simplified compiler API for testing

* [WIP] Support of references, for F#, C# projects. Added more asserts.

* Added more examples + ignoreWarnings support

* Added typecheck + baseline test helpers.

* Added running functionality

* Moved a bunch of compiler tests to a new suite

* Changed error message

* [WIP] Added CSharp compilation + referencing

* Added some simple interop tests

* [WIP] Process MetadataReference recursively

* [WIP] Added netcorapp31 support for tests

* [WIP] Termporary revert to using netcoreapp30 in the tests (instead of netcoreapp31)

* Added types to errors/warnings as oppose to just having tuples

* Fixed tests to fit newer API

* Revert libraries upgrade

* Revert change netcoreapp31 -> netcoreapp30

* Update tests/FSharp.Test.Utilities/Compiler.fs
Co-authored-by: NPhillip Carter <pcarter@fastmail.com>

* Addressed some PR comments

* Fixed missing styling inconsistensies

* Addressed feedback: recursive module instead of forward type declarations + fixed options composition.

* Changed Option.isSome -> defaultArg
Co-authored-by: NPhillip Carter <pcarter@fastmail.com>