Show user ranking in !messages [user]

[Olivia]

Example ranking:

Bob - 4 messages

Jerry - 3

Generic - 2

Larry - 1

Example top speakers output:

Bob - 4 messages (40%)

Jerry - 3 messages (30%)

Generic - 2 messages (20%)

Lets compare The messages output

Example messages output:

!messages Larry

Larry has sent 1 message

Example messages output (IMPROVED EDITION)

!messages Larry

Larry has sent 1 message (rank 4/4)

!messages Jerry

Jerry has sent 3 messages (rank 2/4)

Come on let's add this!