Initial commit: Video metadata registration service

- Add FastAPI server for video metadata registration
- PostgreSQL database models for videos, video_streams, audio_streams, subtitle_streams
- Batch registration script for .probe.json files
- RESTful API endpoints for CRUD operations
- Search functionality by title, artist, codec, resolution

app/config.py

@@ -0,0 +1,15 @@
+from pydantic_settings import BaseSettings
+from functools import lru_cache
+
+
+class Settings(BaseSettings):
+    database_url: str = "postgresql://accusys@localhost:5432/video_register"
+
+    class Config:
+        env_file = ".env"
+        env_file_encoding = "utf-8"
+
+
+@lru_cache()
+def get_settings() -> Settings:
+    return Settings()