Support koin for code gen

[saddam-howladar-gt]

Please support koin https://github.com/InsertKoinIO/koin for code gen

[ZacSweers]

Would need to be community-contributed and fit within the model of our existing code gen.

[malbanese]

It would be pretty awesome to have for multiplatform projects, especially since the Dagger team isn't going to be working on KMP support anytime soon.

[mboudraa]

@malbanese If you want multi platform dependency injection support, you can use kotlin-inject which works very similarly to dagger