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/apisix/constants.lua

@@ -0,0 +1,46 @@
+--
+-- Licensed to the Apache Software Foundation (ASF) under one or more
+-- contributor license agreements.  See the NOTICE file distributed with
+-- this work for additional information regarding copyright ownership.
+-- The ASF licenses this file to You under the Apache License, Version 2.0
+-- (the "License"); you may not use this file except in compliance with
+-- the License.  You may obtain a copy of the License at
+--
+--     http://www.apache.org/licenses/LICENSE-2.0
+--
+-- Unless required by applicable law or agreed to in writing, software
+-- distributed under the License is distributed on an "AS IS" BASIS,
+-- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+-- See the License for the specific language governing permissions and
+-- limitations under the License.
+--
+return {
+    RPC_ERROR = 0,
+    RPC_PREPARE_CONF = 1,
+    RPC_HTTP_REQ_CALL = 2,
+    RPC_EXTRA_INFO = 3,
+    RPC_HTTP_RESP_CALL = 4,
+    HTTP_ETCD_DIRECTORY = {
+        ["/upstreams"] = true,
+        ["/plugins"] = true,
+        ["/ssls"] = true,
+        ["/stream_routes"] = true,
+        ["/plugin_metadata"] = true,
+        ["/routes"] = true,
+        ["/services"] = true,
+        ["/consumers"] = true,
+        ["/global_rules"] = true,
+        ["/protos"] = true,
+        ["/plugin_configs"] = true,
+        ["/consumer_groups"] = true,
+        ["/secrets"] = true,
+    },
+    STREAM_ETCD_DIRECTORY = {
+        ["/upstreams"] = true,
+        ["/services"] = true,
+        ["/plugins"] = true,
+        ["/ssls"] = true,
+        ["/stream_routes"] = true,
+        ["/plugin_metadata"] = true,
+    },
+}