feat(rathole): add clean Cloudron package using base 5.0.0 with server/client config and health endpoint

CloudronPackages/Rathole/README.md

@@ -0,0 +1,37 @@
+# Rathole (Cloudron Package)
+
+Rathole is a reverse proxy that provides secure tunnels for local services.
+Upstream project: https://github.com/rathole-org/rathole
+
+This Cloudron package runs Rathole and a lightweight HTTP health endpoint.
+
+## Defaults
+- Mode: `server` (set `RATHOLE_MODE=client` to run client)
+- Config path: `/app/data/rathole.toml`
+- Health port: `3000` (Cloudron `httpPort`)
+
+## Configuration
+- Put your Rathole TOML config at `/app/data/rathole.toml`, or provide it via the `RATHOLE_CONFIG` environment variable on first start.
+- Example minimal server config is auto-generated if none exists.
+
+## Build (inside packaging container)
+```
+scripts/packaging-up.sh
+scripts/packaging-exec.sh "docker build -t rathole:dev CloudronPackages/Rathole"
+```
+
+## Run locally (inside packaging container)
+```
+scripts/packaging-exec.sh "docker run --rm -p 3000:3000 -p 2333:2333 -v rathole-data:/app/data rathole:dev"
+```
+
+Note: expose additional service ports as needed per your TOML.
+
+## Deploy to Cloudron
+Use Cloudron CLI from inside the packaging container:
+```
+scripts/packaging-enter.sh
+cloudron login
+cloudron install --image rathole:dev
+```
+