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.

server/api/chats/[...pathname].get.ts

@@ -0,0 +1,27 @@
+import { streamToText } from '~~/server/utils/stream'
+
+export default eventHandler(async (event) => {
+  const { pathname } = getRouterParams(event)
+
+  try {
+    const stream = await hubBlob().serve(event, `chats/${pathname}.json`)
+
+    if (!(stream instanceof ReadableStream)) {
+      throw new Error('Le stream n\'est pas valide')
+    }
+
+    const read = await streamToText(stream)
+
+    try {
+      return JSON.parse(read)
+    }
+    catch (jsonError) {
+      console.error('Erreur lors du parsing JSON:', jsonError)
+      return { error: 'Erreur de format JSON' }
+    }
+  }
+  catch (error) {
+    console.error('Erreur lors du traitement du stream:', error)
+    return { error: 'Erreur serveur' }
+  }
+})

server/api/chats/index.post.ts

@@ -0,0 +1,18 @@
+export default eventHandler(async (event) => {
+  const body = await readBody(event)
+  const file = new File([body.file.content], body.file.name, { type: 'application/json' })
+
+  if (!file || !file.size) {
+    throw createError({ statusCode: 400, message: 'No file provided' })
+  }
+
+  ensureBlob(file, {
+    maxSize: '1MB',
+    types: ['application/jsonml+json', 'application/json']
+  })
+
+  return hubBlob().put(file.name, file, {
+    addRandomSuffix: false,
+    prefix: 'chats'
+  })
+})