feat: add Feishu notifier for message notifications

- Implemented a lightweight notification library with support for multiple channels.
- Added FeishuNotifier class to send messages via Feishu webhook.
- Created README documentation for usage and configuration of Feishu notifier.
- Added TypeScript configuration for the project.
- Included a test script for verifying Feishu message notifications.

package.json

@@ -0,0 +1,47 @@
+{
+  "name": "@kevisual/notifier",
+  "version": "0.0.2",
+  "description": "",
+  "main": "index.js",
+  "basename": "/root/notifier",
+  "app": {
+    "type": "system-app",
+    "entry": "app.js",
+    "runtime": [
+      "server"
+    ]
+  },
+  "scripts": {
+    "dev": "bun --watch src/main.ts ",
+    "build": "pnpm run clean && bun run bun.config.mjs",
+    "postbuild": "ev pack",
+    "compile": "bun build --compile ./src/main.ts  --outfile router-template",
+    "compile:win": "bun build --compile ./src/main.ts --target=bun-windows-x64 --outfile router-template.exe",
+    "clean": "rm -rf dist && rimraf pack-dist",
+    "pub": "envision pack -p -u"
+  },
+  "files": [
+    "dist",
+    "src"
+  ],
+  "keywords": [],
+  "author": "abearxiong <xiongxiao@xiongxiao.me> (https://www.xiongxiao.me)",
+  "license": "MIT",
+  "packageManager": "pnpm@10.27.0",
+  "type": "module",
+  "dependencies": {
+    "dayjs": "^1.11.19",
+    "es-toolkit": "^1.43.0"
+  },
+  "devDependencies": {
+    "@kevisual/types": "^0.0.10",
+    "@types/bun": "^1.3.5",
+    "@types/node": "^25.0.3"
+  },
+  "publishConfig": {
+    "access": "public"
+  },
+  "exports": {
+    ".": "./src/index.ts"
+  }
+}