Initial Whisparr Cloudron app implementation

- Created Dockerfile with multi-stage build using thespad/whisparr image
- Added CloudronManifest.json with proper configuration (port 6969)
- Created start.sh script to launch Whisparr
- Added README.md with installation instructions
- Copied all required musl-compatible libraries:
  - musl libc dynamic linker
  - C++ standard library (libstdc++)
  - GCC support library (libgcc_s)
  - ICU libraries for .NET globalization
  - OpenSSL libraries for HTTPS/TLS
  - SQLite library for database operations
  - Brotli compression libraries
  - zlib library
- Configured for amd64 architecture (Cloudron compatible)

CloudronManifest.json

@@ -0,0 +1,20 @@
+{
+    "id": "whisparr.com",
+    "title": "Whisparr",
+    "author": "Jean-Benoît RICHEZ <jeanbenoit-richez@outlook.com>",
+    "description": "Whisparr is an adult movie collection manager for Usenet and BitTorrent users",
+    "tagline": "A great beginning",
+    "version": "0.0.1",
+    "healthCheckPath": "/",
+    "httpPort": 6969,
+    "addons": {
+      "localstorage": {}
+    },
+    "manifestVersion": 2,
+    "website": "https://whisparr.com",
+    "contactEmail": "support@cloudron.io",
+    "icon": "file://icon.png",
+    "tags": [ "media", "movies", "adult" ],
+    "mediaLinks": [ "https://whisparr.com" ]
+  }
+