The short-term goal is to completely typehint the IGDB API responses. This
first change adds the base structures and enums RomM currently uses.
The `ExpandableField` type will allow us to model the expansion
mechanism the IGDB API provides, where a field can include either an ID,
or the full nested structure.
Build and include the `RAHasher` binary in the Docker image, to
calculate hashes for RetroAchievements. Also, add a service to
run `RAHasher` from Python.
Example usage:
```python
from adapters.services.rahasher import RAHasherError, RAHasherService
rahasher = RAHasherService()
try:
hash = await rahasher.calculate_hash("nes", Path("path/to/rom.nes"))
except RAHasherError:
# Handle error
hash = None
```
