The jitpack.io build is facing issues. The code required for the code
generation is quite small, with a negligible build impact, so import it
directly to the repository from the fork and remove the dependency on
jitpack completely.
- Taken from https://codeberg.org/Freeyourgadget/greenDAO
- Original commit: 1998d7cd2d21f662c6044f6ccf3b3a251bbad341
