Add Bot entity to be able to get the name
Add Bot entity to be able to get the name

Right now all the bots are represented as their ID:s which is not very
useful, this fixes this.

This is my first python code so please let me know if something is
weird.

scharfie/wee-slack,rawdigits/wee-slack,megalithic/wee-slack,trygveaa/wee-slack,wee-slack/wee-slack