Add Riot Games Support

[nick-zrymiak]

Website Description
APIsguru is a service that gives information on web APIs.

Reason(s) to Support the Website
Developers can use this service to filter for APIs they need to perform certain tasks.

Endpoints
https://{region}.api.riotgames.com/lol/clash/v1/tournaments
https://{region}.api.riotgames.com/lor/ranked/v1/leaderboards
https://{region}.api.riotgames.com/tft/league/v1/master
https://{region}.api.riotgames.com/tft/league/v1/grandmaster
https://{region}.api.riotgames.com/tft/league/v1/challenger

Questions

1. How many days is the next League of Legends tournament running for?
2. Make tiers of League of Rinterra players based on their league points.
3. Who is the best veteran challenger?
4. List Grand Masters in order of win-loss ratio
5. List highest trending masters based on recent wins, activity and league points

[Lakshay-sethi]

looks great, will wait for your implementation