feat(channels): add WeChat/Weixin channel support

- Add WeixinAdapter with accounts, api, login, monitor, send modules
- Add channel configure command for interactive setup
- Update TelegramAdapter for consistency

Co-authored-by: Qwen-Coder <qwen-coder@alibabacloud.com>

packages/channels/weixin/package.json

@@ -0,0 +1,19 @@
+{
+  "name": "@qwen-code/channel-weixin",
+  "version": "0.1.0",
+  "description": "WeChat (Weixin) channel adapter for Qwen Code",
+  "type": "module",
+  "main": "src/index.ts",
+  "types": "src/index.ts",
+  "exports": {
+    ".": "./src/index.ts",
+    "./accounts": "./src/accounts.ts",
+    "./login": "./src/login.ts"
+  },
+  "dependencies": {
+    "@qwen-code/channel-base": "file:../base"
+  },
+  "devDependencies": {
+    "typescript": "^5.0.0"
+  }
+}