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/grpc-transcode/request.lua

@@ -0,0 +1,72 @@
+--
+-- 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 util   = require("apisix.plugins.grpc-transcode.util")
+local core   = require("apisix.core")
+local pb     = require("pb")
+local bit    = require("bit")
+local ngx    = ngx
+local string = string
+local table  = table
+local pcall = pcall
+local tonumber = tonumber
+local req_read_body = ngx.req.read_body
+
+return function (proto, service, method, pb_option, deadline, default_values)
+    core.log.info("proto: ", core.json.delay_encode(proto, true))
+    local m = util.find_method(proto, service, method)
+    if not m then
+        return false, "Undefined service method: " .. service .. "/" .. method
+                      .. " end", 503
+    end
+
+    req_read_body()
+
+    local pb_old_state = pb.state(proto.pb_state)
+    util.set_options(proto, pb_option)
+
+    local map_message = util.map_message(m.input_type, default_values or {})
+    local ok, encoded = pcall(pb.encode, m.input_type, map_message)
+    pb.state(pb_old_state)
+
+    if not ok or not encoded then
+        return false, "failed to encode request data to protobuf", 400
+    end
+
+    local size = #encoded
+    local prefix = {
+        string.char(0),
+        string.char(bit.band(bit.rshift(size, 24), 0xFF)),
+        string.char(bit.band(bit.rshift(size, 16), 0xFF)),
+        string.char(bit.band(bit.rshift(size, 8), 0xFF)),
+        string.char(bit.band(size, 0xFF))
+    }
+
+    local message = table.concat(prefix, "") .. encoded
+
+    ngx.req.set_method(ngx.HTTP_POST)
+    ngx.req.set_uri("/" .. service .. "/" .. method, false)
+    ngx.req.set_uri_args({})
+    ngx.req.set_body_data(message)
+
+    local dl = tonumber(deadline)
+    if dl~= nil and dl > 0 then
+        ngx.req.set_header("grpc-timeout",  dl .. "m")
+    end
+
+    return true
+end