⚡ Introduce a new high-performing standalone chat API (#1200)

Closes #1154

<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit

- **New Features**
	- Added authentication functionality for user sessions in chat API.
- Introduced chat-related API endpoints for starting, previewing, and
continuing chat sessions, and streaming messages.
- Implemented WhatsApp API webhook handling for receiving and processing
messages.
- Added environment variable `NEXT_PUBLIC_CHAT_API_URL` for chat API URL
configuration.

- **Bug Fixes**
	- Adjusted file upload logic to correctly determine the API host.
	- Fixed message streaming URL in chat integration with OpenAI.

- **Documentation**
- Updated guides for creating blocks, local installation, self-hosting,
and deployment to use `bun` instead of `pnpm`.

- **Refactor**
	- Refactored chat API functionalities to use modular architecture.
- Simplified client log saving and session update functionalities by
using external functions.
	- Transitioned package management and workflow commands to use `bun`.

- **Chores**
- Switched to `bun` for package management in Dockerfiles and GitHub
workflows.
	- Added new Dockerfile for chat API service setup with Bun framework.
	- Updated `.prettierignore` and documentation with new commands.

- **Style**
	- No visible changes to end-users.

- **Tests**
	- No visible changes to end-users.

- **Revert**
	- No reverts in this release.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->

package.json

@@ -3,12 +3,20 @@
   "name": "typebot-os",
   "private": true,
   "license": "AGPL-3.0-or-later",
+  "workspaces": [
+    "packages/*",
+    "packages/deprecated/*",
+    "packages/embeds/*",
+    "packages/forge/*",
+    "packages/forge/blocks/*",
+    "apps/*"
+  ],
   "scripts": {
     "prepare": "husky install",
     "docker:up": "docker compose -f docker-compose.dev.yml up -d && node -e \"setTimeout(() => {}, 5000)\"",
     "docker:nuke": "docker compose -f docker-compose.dev.yml down --volumes --remove-orphans",
     "lint": "turbo run lint",
-    "dev": "pnpm docker:up && turbo build --filter=@typebot.io/nextjs... && turbo run dev --filter=builder... --filter=viewer... --parallel --no-cache",
+    "dev": "pnpm docker:up && turbo build --filter=@typebot.io/nextjs... && turbo run dev --filter=builder... --filter=viewer... --filter=chat-api... --parallel --no-cache",
     "build": "pnpm docker:up && turbo run build",
     "build:apps": "turbo run build --filter=builder... --filter=viewer...",
     "db:migrate": "cd packages/prisma && pnpm run db:migrate",