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/discovery/tars/schema.lua

@@ -0,0 +1,45 @@
+--
+-- 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 host_pattern = [[^([a-zA-Z0-9-_.]+:.+\@)?[a-zA-Z0-9-_.:]+$]]
+
+return {
+    type = 'object',
+    properties = {
+        db_conf = {
+            type = 'object',
+            properties = {
+                host = { type = 'string', minLength = 1, maxLength = 500, pattern = host_pattern },
+                port = { type = 'integer', minimum = 1, maximum = 65535, default = 3306 },
+                database = { type = 'string', minLength = 1, maxLength = 64 },
+                user = { type = 'string', minLength = 1, maxLength = 64 },
+                password = { type = 'string', minLength = 1, maxLength = 64 },
+            },
+            required = { 'host', 'database', 'user', 'password' }
+        },
+        full_fetch_interval = {
+            type = 'integer', minimum = 90, maximum = 3600, default = 300,
+        },
+        incremental_fetch_interval = {
+            type = 'integer', minimum = 5, maximum = 60, default = 15,
+        },
+        default_weight = {
+            type = 'integer', minimum = 0, maximum = 100, default = 100,
+        },
+    },
+    required = { 'db_conf' }
+}