Simple birthday announcement feature

[Maru-tan]

Let members celebrate their birthday in our server.

Steps:

1. Members add the date of their birthday with a command

2. On the day of their birthday, the bot mentions them in #modlog with a congratulations message

3. After the day is over, the message in modlog is removed

4. Command to remove your birthday from our bot

[Robin-M]

I like this idea, here are a few suggestions.
Step 1: accept two formats, dd-mm and dd-mm-yyyy. If the second format is chosen, the new age is included in step 2. If the command is used again it overwrites the previous date, e.g. the second time a date without year is entered so the year from the first time is removed.
Step 3: I understand the cleaning so that #modlog is not flooded and you don't need to create a new channel for it. But maybe leave them a bit longer so that people who didn't log in that day still see the message?
Step 4: if the command is used and there is a congratulations message in #modlog it should also be deleted immediately.