Migrate help system to forums

[Zabuzard]

JDA released forum support with v5.0.0-alpha.20:

https://github.com/DV8FromTheWorld/JDA/releases/tag/v5.0.0-alpha.20

https://github.com/DV8FromTheWorld/JDA/pull/2184/files

Its time to move our help system to forums.

Most of the functionality can remain as it is, since posts are still just threads. What has to be adjusted is mostly:

• channel localization (its a ForumChannel now, not a TextChannel)
• the overviewChannel stays, but questions will not be listed under it anymore, but instead move into the forum channel. the stagingChannel itself wont exist in its current form anymore (it will become the forum)
  • the ImplicitAskListener functionality can be removed
• thread activity should be indicated by tags, not thread titles
• helper categories should be indicated by tags, not thread titles

There is no urgency on this.

[Zabuzard]

Blocked by #586

[Zabuzard]

blocked by discord not offering forums to all servers yet (even for community servers its only 90% of them)

[Tais993]

* the `overviewChannel` stays, but questions will not be listed under it anymore, but instead move into the forum channel. the `stagingChannel` itself wont exist in its current form anymore (it will become the forum)

I don't understand what the plan is.
What will the overviewChannel be then? An empty channel?

[Zabuzard]

What will the overviewChannel be then? An empty channel?

Correct me if im wrong, but one can filter forum questions based on tags, right? So like, i can let it list all MATH questions.

If thats the case, the overview channel isnt needed for the bot anymore. However, we still need a channel to keep the explanation and role selection stuff.

But none of that is bot-business. So both entries can be removed entirely and the bot only needs to know where the forum is.

[github-actions]

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