Add in-class documentation to Result

[tomjholland]

This task is to enable class magic methods like __repr__ and to create help() or what_can_i_do() methods that print the doc strings of available attributes and encourage use of the API documentation.

[LefterisXefteris]

Hello Tom Holland (@tomjholland) i am more than to work for this, if thats okay

[tomjholland]

Hi Lefteris (@LefterisXefteris), absolutely! A student had a quick go at this in the summer, which can be a starting point (#313). Maybe think about clarity and conciseness of the __repr__ and helper function, inspired by other python libraries if possible. what_can_i_do() is also a terrible name for a function so feel free to come up with a better name!

[LefterisXefteris]

Hello Tom Holland (@tomjholland) thank you for assigning me this!