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-count/limit-count-local.lua

@@ -0,0 +1,79 @@
+--
+-- 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 limit_count = require("resty.limit.count")
+
+local ngx = ngx
+local ngx_time = ngx.time
+local assert = assert
+local setmetatable = setmetatable
+local core = require("apisix.core")
+
+local _M = {}
+
+local mt = {
+    __index = _M
+}
+
+local function set_endtime(self, key, time_window)
+    -- set an end time
+    local end_time = ngx_time() + time_window
+    -- save to dict by key
+    local success, err = self.dict:set(key, end_time, time_window)
+
+    if not success then
+        core.log.error("dict set key ", key, " error: ", err)
+    end
+
+    local reset = time_window
+    return reset
+end
+
+local function read_reset(self, key)
+    -- read from dict
+    local end_time = (self.dict:get(key) or 0)
+    local reset = end_time - ngx_time()
+    if reset < 0 then
+        reset = 0
+    end
+    return reset
+end
+
+function _M.new(plugin_name, limit, window)
+    assert(limit > 0 and window > 0)
+
+    local self = {
+        limit_count = limit_count.new(plugin_name, limit, window),
+        dict = ngx.shared[plugin_name .. "-reset-header"]
+    }
+
+    return setmetatable(self, mt)
+end
+
+function _M.incoming(self, key, commit, conf, cost)
+    local delay, remaining = self.limit_count:incoming(key, commit, cost)
+    local reset
+
+    if remaining == conf.count - cost then
+        reset = set_endtime(self, key, conf.time_window)
+    else
+        reset = read_reset(self, key)
+    end
+
+    return delay, remaining, reset
+end
+
+return _M