simplify go generate file handling

[adlerhurst]

As a zitadel developer, I want simplify the usage of go generate in zitadel so that improve the pipeline and code generation in general.

Acceptance Criteria

Beta Give feedback

1. depending on the decision get rid of the generate files or provide a simple way to use them and especially cache them

[adlerhurst]

@fforootd you might have some additional input

[eliobischof]

@adlerhurst I don't quite understand what problem you want to have solved. What's wrong with the generated files?