feat: add wasm-rust sdk with say-hello simple extension (#350)

plugins/wasm-rust/extensions/say-hello/docker-compose.yaml

@@ -0,0 +1,27 @@
+# Copyright (c) 2023 Alibaba Group Holding Ltd.
+#
+# Licensed 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.
+  
+services:
+  envoy:
+    image: higress-registry.cn-hangzhou.cr.aliyuncs.com/higress/envoy:1.20
+    hostname: envoy
+    ports:
+      - "10000:10000"
+    volumes:
+      - ./envoy.yaml:/etc/envoy/envoy.yaml
+      - ./target/wasm32-wasi/release:/etc/envoy/proxy-wasm-plugins
+    networks:
+      - envoymesh
+networks:
+  envoymesh: {}