feat: add chat and file management APIs, implement chat loading and saving functionality

- Introduced new API endpoints for chat management including posting and retrieving chat messages.
- Implemented file upload and deletion functionalities for chat and other files.
- Added utility functions for streaming text and loading chat data.
- Created TypeScript types for models and agents used in the application.
- Configured TypeScript settings for server and project.
- Added favicon and workspace configuration for pnpm.

app/components/AppFooter.vue

@@ -0,0 +1,13 @@
+<template>
+  <div>
+    
+  </div>
+</template>
+
+<script lang="ts" setup>
+
+</script>
+
+<style>
+
+</style>