Feature request: Python marshal support

Python has a serialization format called [marshal](https://docs.python.org/3/library/marshal.html) which is missing from CyberChef

**Describe the solution you'd like**
I would like CyberChef to be able to encode and decode using the Python marshal format

**Describe alternatives you've considered**
I currently do it using a Python script of course :)

**Additional context**
Marshal is similar to [Pickle](https://docs.python.org/3/library/pickle.html#module-pickle) which would be nice to have too.
This JS library might help: https://www.npmjs.com/package/py-marshal