refactor: use bun for package management

+ add package.json to each packages
+ update import path

server/src/containers/expiryChecker.ts

@@ -1,7 +1,7 @@
 import schedule from 'node-schedule'
 import type { HydratedDocument } from 'mongoose'
-import { Session } from '../../../packages/models'
-import type { ISession } from '../../../packages/models'
+import { Session } from '@odyssey/models'
+import type { ISession } from '@odyssey/models'
 import config from '../config.js'
 import { deleteContainer } from './docker.js'
 import logger from '../utils/logger.js'