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/t/config-center-json/plugin-metadata.t

@@ -0,0 +1,100 @@
+#
+# 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.
+#
+use t::APISIX 'no_plan';
+
+repeat_each(1);
+log_level('info');
+no_root_location();
+no_shuffle();
+
+
+run_tests();
+
+__DATA__
+
+=== TEST 1: sanity
+--- apisix_json
+{
+  "upstreams": [
+    {
+      "id": 1,
+      "nodes": {
+        "127.0.0.1:1980": 1
+      },
+      "type": "roundrobin"
+    }
+  ],
+  "routes": [
+    {
+      "uri": "/hello",
+      "upstream_id": 1,
+      "plugins": {
+        "http-logger": {
+          "batch_max_size": 1,
+          "uri": "http://127.0.0.1:1980/log"
+        }
+      }
+    }
+  ],
+  "plugin_metadata": [
+    {
+      "id": "http-logger",
+      "log_format": {
+        "host": "$host",
+        "remote_addr": "$remote_addr"
+      }
+    }
+  ]
+}
+--- request
+GET /hello
+--- error_log
+"remote_addr":"127.0.0.1"
+--- no_error_log
+failed to get schema for plugin:
+
+
+
+=== TEST 2: sanity
+--- apisix_json
+{
+  "upstreams": [
+    {
+      "id": 1,
+      "nodes": {
+        "127.0.0.1:1980": 1
+      },
+      "type": "roundrobin"
+    }
+  ],
+  "routes": [
+    {
+      "uri": "/hello",
+      "upstream_id": 1
+    }
+  ],
+  "plugin_metadata": [
+    {
+      "id": "authz-casbin",
+      "model": 123
+    }
+  ]
+}
+--- request
+GET /hello
+--- error_log
+failed to check item data of [plugin_metadata]