In userinfo, include an activity graph

[Julien00859]

When I use !userinfo, I'm interested in knowing when the user account was created and when did he join the server. When it is an user that has joined the server several months/years ago, I'm interested in knowing when the user was most active and in which channel.

What would be great is to see an activity graph, an image that show its activity grouped by month.

Example, in the image below, we see that the member was most active around September 2021

Then the bot should also logs the 3 channels the user posted the most and how many messages each time.