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/admin/consumers.lua

@@ -0,0 +1,65 @@
+--
+-- 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 core    = require("apisix.core")
+local plugins = require("apisix.admin.plugins")
+local resource = require("apisix.admin.resource")
+
+
+local function check_conf(username, conf, need_username, schema)
+    local ok, err = core.schema.check(schema, conf)
+    if not ok then
+        return nil, {error_msg = "invalid configuration: " .. err}
+    end
+
+    if username and username ~= conf.username then
+        return nil, {error_msg = "wrong username" }
+    end
+
+    if conf.plugins then
+        ok, err = plugins.check_schema(conf.plugins, core.schema.TYPE_CONSUMER)
+        if not ok then
+            return nil, {error_msg = "invalid plugins configuration: " .. err}
+        end
+    end
+
+    if conf.group_id then
+        local key = "/consumer_groups/" .. conf.group_id
+        local res, err = core.etcd.get(key)
+        if not res then
+            return nil, {error_msg = "failed to fetch consumer group info by "
+                                     .. "consumer group id [" .. conf.group_id .. "]: "
+                                     .. err}
+        end
+
+        if res.status ~= 200 then
+            return nil, {error_msg = "failed to fetch consumer group info by "
+                                     .. "consumer group id [" .. conf.group_id .. "], "
+                                     .. "response code: " .. res.status}
+        end
+    end
+
+    return conf.username
+end
+
+
+return resource.new({
+    name = "consumers",
+    kind = "consumer",
+    schema = core.schema.consumer,
+    checker = check_conf,
+    unsupported_methods = {"post", "patch"}
+})