[CompTimeDI] Trying source generators

[dadhi]

Using those great blog post about the SG https://andrewlock.net/series/creating-a-source-generator/

Testing https://www.meziantou.net/testing-roslyn-incremental-source-generators.htm

Compiling the registration code CSharpScript.EvaluateAsync is heavyweight, but we can go "low level"
https://carljohansen.wordpress.com/2020/05/09/compiling-expression-trees-with-roslyn-without-memory-leaks-2/

How to get data from the attribute in SG if we Export things:
https://stackoverflow.com/questions/77215926/get-attribute-property-value-in-c-sharp-source-generation-iincrementalgenerato

Huh, what is this thing
https://learn.microsoft.com/en-gb/visualstudio/msbuild/tutorial-custom-task-code-generation?view=vs-2022