[FOSSOVERFLOW-26] feat: add functionality to friends button

[amaydixit11]

It would be good to know who the user has friended across each leaderboard with their rankings, info and be able to unfriend them from here, if necessary.

[emcc2302]

@amaydixit11 could you pls assign this to me

[emcc2302]

hey @amaydixit11 kindly check my pr #176

[VarshiniGunti]

Hi, I’m Varshini (IIT Bhilai). I’d like to work on this issue for FOSS Overflow 2025–26. Please assign it to me.