File attachments.ts

apps/web/services/slack/sync/attachments.ts:None–None

import { uploadFile } from 'services/aws/s3';
import { BUCKET_PREFIX_FOR_ATTACHMENTS, LINEN_STATIC_CDN } from 'config';
import { messages, prisma } from '@linen/database';
import { MessageFile, ConversationHistoryMessage, Logger } from '@linen/types';