Bump schedule

[chnaski]

Description of cog:

We all use bump bots.
It would be nice to set a bump schedule per bot.
The reminder is set to either dm and/or channel output.
Input the length of time between bumps so we can do the bump manually since we arent allowed to bump with bots.

API's or other information for cog:

Other info (Bounty, issues, ETC):

[aikaterna]

Hello, the cog board has moved. Please submit a request on https://cogboard.red/