Initial commit: Plex MCP server with 6 tools and API passthrough

- get_libraries: List all library sections
- search_library: Search for media by title
- get_metadata: Get detailed item info by rating key
- get_recently_added: Get recently added content
- refresh_library: Trigger library scan
- plex_api_call: Raw API passthrough for any endpoint
- search_api_docs: Search OpenAPI spec for endpoint documentation

Includes Docker support and Gitea Actions workflow for container builds.

docker-compose.yml

@@ -0,0 +1,20 @@
+services:
+  plex-mcp:
+    build: .
+    container_name: plex-mcp
+    restart: unless-stopped
+    ports:
+      - "${PORT:-8000}:8000"
+    environment:
+      - PLEX_URL=${PLEX_URL}
+      - PLEX_TOKEN=${PLEX_TOKEN}
+      - PLEX_CLIENT_ID=${PLEX_CLIENT_ID:-plex-mcp-server}
+      - PORT=8000
+    env_file:
+      - .env
+    healthcheck:
+      test: ["CMD", "python", "-c", "import httpx; httpx.get('http://localhost:8000/health').raise_for_status()"]
+      interval: 30s
+      timeout: 10s
+      retries: 3
+      start_period: 10s