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/ai-proxy/base.lua

@@ -0,0 +1,50 @@
+--
+-- 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 require = require
+local bad_request = ngx.HTTP_BAD_REQUEST
+
+local _M = {}
+
+function _M.before_proxy(conf, ctx)
+    local ai_instance = ctx.picked_ai_instance
+    local ai_driver = require("apisix.plugins.ai-drivers." .. ai_instance.provider)
+
+    local request_body, err = ai_driver.validate_request(ctx)
+    if not request_body then
+        return bad_request, err
+    end
+
+    local extra_opts = {
+        endpoint = core.table.try_read_attr(ai_instance, "override", "endpoint"),
+        query_params = ai_instance.auth.query or {},
+        headers = (ai_instance.auth.header or {}),
+        model_options = ai_instance.options,
+    }
+
+    if request_body.stream then
+        request_body.stream_options = {
+            include_usage = true
+        }
+    end
+
+    return ai_driver:request(ctx, conf, request_body, extra_opts)
+end
+
+
+return _M