feat: add indexer and torrent REST controllers with service layer

- Add config module for yaml config (database, indexers, torrent)
- Add indexer module with Torznab protocol support
- Add IndexerService and TorrentService for business logic
- Add REST controllers for indexer search and torrent management
- Add Docker Compose for PostgreSQL and Jackett
- Add ERD documentation for database schema

containers/docker-compose.yml

@@ -0,0 +1,38 @@
+services:
+  postgres:
+    image: postgres:16-alpine
+    container_name: music-aggregator-db
+    restart: unless-stopped
+    environment:
+      POSTGRES_USER: music
+      POSTGRES_PASSWORD: music
+      POSTGRES_DB: music_aggregator
+    volumes:
+      - postgres_data:/var/lib/postgresql/data
+    ports:
+      - "5433:5432"
+    healthcheck:
+      test: ["CMD-SHELL", "pg_isready -U music -d music_aggregator"]
+      interval: 10s
+      timeout: 5s
+      retries: 5
+
+  jackett:
+    image: lscr.io/linuxserver/jackett:latest
+    container_name: music-aggregator-jackett
+    restart: unless-stopped
+    environment:
+      - PUID=1000
+      - PGID=1000
+      - TZ=Europe/Warsaw
+      - AUTO_UPDATE=true
+    volumes:
+      - jackett_config:/config
+      - jackett_downloads:/downloads
+    ports:
+      - "9117:9117"
+
+volumes:
+  postgres_data:
+  jackett_config:
+  jackett_downloads: