feat: wasm support opa (Open Policy Agent) (#760)

plugins/wasm-go/extensions/opa/docker-compose.yaml

@@ -0,0 +1,16 @@
+version: '3.7'
+services:
+  envoy:
+    image: higress-registry.cn-hangzhou.cr.aliyuncs.com/higress/gateway:1.3.1
+    entrypoint: /usr/local/bin/envoy
+    command: -c /etc/envoy/envoy.yaml --component-log-level wasm:debug
+    networks:
+      - wasmtest
+    ports:
+      - "10000:10000"
+    volumes:
+      - ./envoy.yaml:/etc/envoy/envoy.yaml
+      - ./plugin.wasm:/etc/envoy/plugin.wasm
+
+networks:
+  wasmtest: { }