can you add this as a hacktober? if you possible can you guide / elaborate issue more and provide some possible solution which you have in mind; and dont forget to assign me : )

can you add this as a hacktober?

you mean label as hacktober ?

yeah like such that i can count it in my PR for hacktober?

can you add this as a hacktober? if you possible can you guide / elaborate issue more and provide some possible solution which you have in mind; and dont forget to assign me : )

To elaborate:
msgpack is a binary serialization format: "It's like JSON. but fast and small."
Currently bruno cannot handle a response in msgpack format, it essentially crashes. It doesn't actually crash, but the UI disappears, for me at least.
I see two possible solutions, though I don't know which one is better.
One solution is the ability to select a format for the received data (or at least a suggestion: parsing may fail if incorrect).
For example: you tell Bruno the received format is msgpack, but it displays it as JSON.
I suppose you should be able to see the raw binary data in some form as well without it crashing.
Another option would be automatic parsing if the response headers contain Content-Type: application/x-msgpack, although that may be a bit messy just because it is not an official registered MIME type.

I want to give it a try , can you assign it to me? @ino-josh

We don't have a process to assign issues. You can pick it up and post details as you make progress.
Once ready, please raise a PR.