Add sound normalization endpoints and corresponding tests

- Implemented endpoints for normalizing all sounds, normalizing sounds by type, and normalizing a specific sound by ID in the sounds API.
- Added dependency injection for the SoundNormalizerService.
- Included role-based access control to restrict normalization actions to admin users.
- Created comprehensive test cases for the new normalization endpoints, covering success scenarios, parameter handling, and error cases.
- Removed redundant test file for sound normalizer endpoints as tests are now integrated into the main sound endpoints test suite.

app/api/v1/__init__.py

@@ -2,7 +2,7 @@
 
 from fastapi import APIRouter
 
-from app.api.v1 import auth, main, socket, sound_normalizer, sounds
+from app.api.v1 import auth, main, socket, sounds
 
 # V1 API router with v1 prefix
 api_router = APIRouter(prefix="/v1")
@@ -12,4 +12,3 @@ api_router.include_router(main.router, tags=["main"])
 api_router.include_router(auth.router, prefix="/auth", tags=["authentication"])
 api_router.include_router(socket.router, tags=["socket"])
 api_router.include_router(sounds.router, tags=["sounds"])
-api_router.include_router(sound_normalizer.router, tags=["sound-normalization"])