chore: Migrate server from Hono to XebecServer and update route handlers

[itsfuad]

This pull request includes significant updates to the server/libs/apiServer.ts and server/libs/fileHandler.ts files, primarily focusing on replacing the Hono server with the XebecServer and refactoring the code to use the new server's API.

Server Replacement and Refactoring:

• Replaced Hono server with XebecServer and updated the server instance creation accordingly in server/libs/apiServer.ts and server/libs/fileHandler.ts. [1] [2]
• Updated the middleware and route handlers to use the new XebecServer API, including changes in how headers are set and responses are created. [1] [2]

Response Handling:

• Refactored response handling to use the Response object instead of the ctx object, ensuring consistency with the new server's API. [1] [2] [3] [4]
• Updated file upload and download endpoints to handle responses and errors using the Response object. [1] [2]

Error Handling:

• Improved error handling during file uploads and downloads, ensuring proper status codes and messages are returned. [1] [2] [3]

These changes ensure that the server code is compatible with the XebecServer and improve the overall structure and error handling of the application.