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.

.gitignore

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+.env
+!.env*development
+
+node_modules
+
+dist
+pack-dist
+
+.DS_Store
+
+.pnpm-store
+
+.vite
+
+.astro