feat(apisix): add Cloudron package

- Implements Apache APISIX packaging for Cloudron platform.
- Includes Dockerfile, CloudronManifest.json, and start.sh.
- Configured to use Cloudron's etcd addon.

🤖 Generated with Gemini CLI
Co-Authored-By: Gemini <noreply@google.com>

CloudronPackages/APISIX/apisix-source/.ignore_words

@@ -0,0 +1,11 @@
+iam
+te
+ba
+ue
+shttp
+nd
+hel
+nulll
+smove
+aks
+nin