fix $125 - Allow up to 18 possible answers for a poll => cap of reactions that can get added to a message

fix: $121 - fixed issue, that also sent messages, where the bot was the author, into the support channel

fix: $122 - added greeting message, that is sent as soon as somebody is assigned the "Studentin" role

fix: $121 - add support functionality that mirrors all private messages sent to the bot to a specified support channel, to be reviewd by a mod.

fix: $11r - add welcome dm beeing sent to users joining the discord server, also updated various libraries

To avoid exceptions with embeds being too long, the members that voted for a specific option, are not added to the result

Update fernuni-bot.py to use intents, which are required for discord.py v1.5

Added functionality, to add a new "Lerngruppen" voice channel, whenever somebody joins any of the existing ones and there is no empty voice channel in that category left.

Fixed, that approval message was not deleted, after it got approved by a mod. That could have caused issues with texts being added more than once.

Added text command functionality, that allows to add commands, that print simply print out text. And in case there are multiple texts for a command, one is chosen randomly. Also added command !add-motivation, that allows users to add specific texts for !motivation command. Those texts then have to be approved by a mod.