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.

.gitea/workflows/docker-build.yml

@@ -0,0 +1,30 @@
+name: Build and Push Plex MCP Docker Image
+
+on:
+  push:
+    branches:
+      - main
+      - master
+
+jobs:
+  build:
+    runs-on: docker
+    container:
+      image: catthehacker/ubuntu:act-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+
+      - name: Login to Gitea Container Registry
+        uses: docker/login-action@v2
+        with:
+          registry: gitea.ext.ben.io
+          username: ${{ gitea.actor }}
+          password: ${{ secrets.CR_PAT }}
+
+      - name: Build and Push
+        uses: docker/build-push-action@v4
+        with:
+          context: .
+          push: true
+          tags: gitea.ext.ben.io/${{ gitea.repository }}:latest