feat: add webchat stream but only some

pkg/platform/sources/webchat.yaml

@@ -9,7 +9,18 @@ metadata:
     en_US: "WebChat adapter for pipeline debugging"
     zh_Hans: "用于流水线调试的网页聊天适配器"
   icon: ""
-spec: {}
+spec:
+  config:
+    - name: enable-stream-reply
+      label:
+        en_US: Enable Stream Reply Mode
+        zh_Hans: 启用电报流式回复模式
+      description:
+        en_US: If enabled, the bot will use the stream of telegram reply mode
+        zh_Hans: 如果启用，将使用电报流式方式来回复内容
+      type: boolean
+      required: true
+      default: false
 execution:
   python:
     path: "webchat.py"