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/azure-functions.lua

@@ -0,0 +1,61 @@
+--
+-- 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 plugin = require("apisix.plugin")
+local plugin_name, plugin_version, priority = "azure-functions", 0.1, -1900
+
+local azure_authz_schema = {
+    type = "object",
+    properties = {
+        apikey = {type = "string"},
+        clientid = {type = "string"}
+    }
+}
+
+local metadata_schema = {
+    type = "object",
+    properties = {
+        master_apikey = {type = "string", default = ""},
+        master_clientid = {type = "string", default = ""}
+    }
+}
+
+local function request_processor(conf, ctx, params)
+    local headers = params.headers or {}
+    -- set authorization headers if not already set by the client
+    -- we are following not to overwrite the authz keys
+    if not headers["x-functions-key"] and
+            not headers["x-functions-clientid"] then
+        if conf.authorization then
+            headers["x-functions-key"] = conf.authorization.apikey
+            headers["x-functions-clientid"] = conf.authorization.clientid
+        else
+            -- If neither api keys are set with the client request nor inside the plugin attributes
+            -- plugin will fallback to the master key (if any) present inside the metadata.
+            local metadata = plugin.plugin_metadata(plugin_name)
+            if metadata then
+                headers["x-functions-key"] = metadata.value.master_apikey
+                headers["x-functions-clientid"] = metadata.value.master_clientid
+            end
+        end
+    end
+
+    params.headers = headers
+end
+
+
+return require("apisix.plugins.serverless.generic-upstream")(plugin_name,
+        plugin_version, priority, request_processor, azure_authz_schema, metadata_schema)