Add forum channels and their posts into the ClickUp integration.

This would allow us to group ClickUp notifications under essentially one channel on the sidebar but also give us the ability to separate them into categories to avoid spamming a single channel with hundreds of different notifications.

For an example:

Our organization utilizes Forums to group together related webhooks, such as GitHub's under one channel and then uses Posts within the Forum channel to differentiate notifications across repositories.

In Discord's own words:

Forum Channels provide a space for organized discussions. With forums, you can discuss specific topics and not worry about talking over each other. Since discussions are contained in posts, it’s easier to jump in on an existing one (or start a new one) without worrying about your message getting buried!

Here are some more information about them: https://support.discord.com/hc/en-us/articles/6208479917079-Forum-Channels-FAQ