Add new sound files and update dependencies

- Added various sound files to the soundboard, including insults, quotes, and sound effects.
- Introduced new dependencies: ffmpeg-python (version 0.2.0) and pydub (version 0.25.1) for audio processing.
- Updated the lock file to reflect the new packages and their respective versions.
- Added .gitignore files in the sounds/stream and sounds/temp directories to exclude unnecessary files.

app/models/__init__.py

@@ -1,7 +1,8 @@
 """Database models."""
 
 from .plan import Plan
+from .sound import Sound
 from .user import User
 from .user_oauth import UserOAuth
 
-__all__ = ["Plan", "User", "UserOAuth"]
+__all__ = ["Plan", "Sound", "User", "UserOAuth"]