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/.github/workflows/license-checker.yml

@@ -0,0 +1,37 @@
+#
+# 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.
+#
+name: License checker
+
+on:
+  push:
+    branches: [master, 'release/**']
+  pull_request:
+    branches: [master, 'release/**']
+
+jobs:
+  check-license:
+    runs-on: ubuntu-latest
+    timeout-minutes: 3
+
+    steps:
+      - uses: actions/checkout@v4
+      - name: Check License Header
+        uses: apache/skywalking-eyes@v0.6.0
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}