[Feature request] Expansion timezone cog

[L4stIdi0t]

Feature:
it would be nice if you could compare more users with each other and use a player as base for
example:
time compare @userbase @user1 @user2
User1 is 3 hours ahead of userBase, User2 is 1 hour behind of userBase (preferably printed out in a list in order of time (and an override would be cool to sort on order of mentioned)

Feature:
it would be nice if you could compare to a timezone so for example
time compare UTC @user1

Feature:
list of all timezones which are used in the current discord server
time listTZ

Feature:
a method of calculating a time where most people or all people are likely be to awake in a certain timezone format. you could call this by using a @ROLE, @user @user @user or #channel (all the players who got acces to that channel)
Example:
time calculate UTC @user1 @user2 (user1 utc -4 user2 utc +4)
recommended time: UTC 12:00 - 16:00