Colour roles module

[ldelelis]

Current functionality:

• Hourly caches the current server roles
• On request, validates:
  • Whether the requested colour is a valid hex code
  • If the user doesn't already have that colour assigned
• Removes all other assigned colours
• Tries to find that colour in the stored cache.
  • If HIT: assigns that role to the user
  • If MISS: creates the role, adds it to the cache, and assigns it to the user

Pending:

• [x] Right now the guildMemberUpdate event this triggers interferes with the mutes module, making it throw unhandledrejection errors

• [x] Could maybe thin down the cache to only store roles that match the colour regex

• [x] Code Review and possible refactors

• [x] Add a confirmation message when the role is assigned

• [x] Mixing uppercase and lowercase letters causes role duplication

• [x] Implement random colour assignment on member join