feat(rathole,apisix): complete Rathole and APISIX Cloudron packages

- Fix Rathole download URL to use .zip format instead of .tar.gz
- Complete APISIX package using official apache/apisix:3.8.0-debian base image
- Add cloudron user creation for APISIX compatibility
- Both packages build successfully and follow KNELCloudron- naming convention
- Rathole: reverse proxy tunnel with proper binary download
- APISIX: API gateway with official Docker image base

CloudronPackages/APISIX/supervisord.conf

@@ -0,0 +1,12 @@
+[supervisord]
+logfile=/var/log/supervisor/supervisord.log
+pidfile=/run/supervisord.pid
+nodaemon=true
+
+[program:app]
+command=/app/pkg/start.sh
+autorestart=true
+stdout_logfile=/var/log/supervisor/app.stdout.log
+stderr_logfile=/var/log/supervisor/app.stderr.log
+user=cloudron
+