Add support to fetch preferred handle about codeforces

[jaindiv26]

Got it. I'll work on this issue and submit the PR soon.

[jaindiv26]

@Chromicle Can you tell me more about this issue?

[ajay-prabhakar]

yeah, currently the contests which are showing are handle of sandeshghanta which you can see from API_URL of https://codeforces.com/api/user.rating?handle=sandeshghanta so before fetching of contests take the handle from the user through edit text and just append the handle at last of the link instead of sandeshghanta so, we can fetch the contests of particular handle

[ajay-prabhakar]

if you need any help on this issue ask here

[jaindiv26]

Okay.