⚡ 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 -->

packages/bot-engine/forge/executeForgedBlock.ts

@@ -19,6 +19,8 @@ import { updateVariablesInSession } from '@typebot.io/variables/updateVariablesI
 import { ExecuteIntegrationResponse } from '../types'
 import { byId } from '@typebot.io/lib'
 import { BubbleBlockType } from '@typebot.io/schemas/features/blocks/bubbles/constants'
+import { env } from '@typebot.io/env'
+import { getCredentials } from '../queries/getCredentials'
 
 export const executeForgedBlock = async (
   state: SessionState,
@@ -40,11 +42,7 @@ export const executeForgedBlock = async (
         logs: [noCredentialsError],
       }
     }
-    credentials = await prisma.credentials.findUnique({
-      where: {
-        id: block.options.credentialsId,
-      },
-    })
+    credentials = await getCredentials(block.options.credentialsId)
     if (!credentials) {
       console.error('Could not find credentials in database')
       return {
@@ -57,15 +55,13 @@ export const executeForgedBlock = async (
   const typebot = state.typebotsQueue[0].typebot
   if (
     action?.run?.stream &&
-    isPlaneteScale() &&
-    credentials &&
-    isCredentialsV2(credentials) &&
-    state.isStreamEnabled &&
-    !state.whatsApp &&
     isNextBubbleTextWithStreamingVar(typebot)(
       block.id,
       action.run.stream.getStreamVariableId(block.options)
-    )
+    ) &&
+    state.isStreamEnabled &&
+    !state.whatsApp &&
+    !process.env.VERCEL_ENV
   ) {
     return {
       outgoingEdgeId: block.outgoingEdgeId,