Need to be able to show actual Summoner Name for Challenges leaderboard

[Hintful]

Motivation

We currently have a working Challenges leaderboard (#30) - but the Riot API for fetching this leaderboard returns entries with PUUID instead of actual summoner name.

My initial approach was creating an API endpoint on our end for fetching summoner info with PUUID and then hitting that API from front-end to fetch individual entries' summoner name, but this seems very unreliable and hacky.

Ideal solution seems to be the following:

• For our API endpoint for fetching leaderboard, we pre-process the response received from Riot API via additional calls to their summoner info by PUUID API and fetch individual summoner name before returning the final response back to front-end

Acceptance Criteria

• Challenges leaderboard is able to show actual Summoner name for entries instead of their PUUID

[Hintful]

The issue has been resolved with PR #37.

Currently, the summoner info fetch via PUUID is done on the front-end side. In the future, we might explore the option of doing this in the back-end to see if it improves loading performance. Resolving for now.