Add Sonarr Cloudron app package

- Add CloudronManifest.json with app configuration
- Add Dockerfile for building Sonarr v4 image
- Add start.sh script to launch Sonarr
- Add icon.png for app icon
- Update README.md with installation and usage instructions

CloudronManifest.json

@@ -0,0 +1,20 @@
+{
+  "id": "io.cloudron.sonarr",
+  "title": "Sonarr",
+  "author": "bradinfluence",
+  "description": "Sonarr is a PVR for Usenet and BitTorrent users. It can monitor multiple RSS feeds for new episodes of your favorite shows and will grab, sort and rename them.",
+  "tagline": "Smart PVR for newsgroup and bittorrent users",
+  "version": "1.0.0",
+  "healthCheckPath": "/",
+  "httpPort": 8989,
+  "addons": {
+    "localstorage": {}
+  },
+  "manifestVersion": 2,
+  "website": "https://sonarr.tv",
+  "contactEmail": "support@cloudron.io",
+  "icon": "file://icon.png",
+  "tags": [ "media", "tv", "pvr", "torrent", "usenet" ],
+  "mediaLinks": [ "https://sonarr.tv/img/logo.png" ]
+}
+