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/plugins/limit-req/limit-req-redis.lua

@@ -0,0 +1,54 @@
+--
+-- 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.
+--
+local redis             = require("apisix.utils.redis")
+local setmetatable      = setmetatable
+local util              = require("apisix.plugins.limit-req.util")
+
+local setmetatable  = setmetatable
+
+
+local _M = {version = 0.1}
+
+
+local mt = {
+    __index = _M
+}
+
+
+function _M.new(plugin_name, conf, rate, burst)
+    local self = {
+        conf = conf,
+        plugin_name = plugin_name,
+        burst = burst * 1000,
+        rate = rate * 1000,
+    }
+    return setmetatable(self, mt)
+end
+
+
+function _M.incoming(self, key, commit)
+    local conf = self.conf
+    local red, err = redis.new(conf)
+    if not red then
+        return red, err
+    end
+
+    return util.incoming(self, red, key, commit)
+end
+
+
+return _M