Add ability to create non-NSFW warning message when joining a text channel

Normally when a channel is marked as NSFW, people who click on that channel for the first time with a warning message about needing to be 18 years or older.

My suggestion would be to add something similar to any text channel, and allow a custom test message to be displayed.

As a bonus, it would be great for another feature of this to have a custom accept/deny UI setup. Rather than simple buttons that say something like "accept" and "deny", adding the ability for users to select an answer from a drop-down or type in their own answers that get logged in the audit logs.

The use case I'd like to use it for is this:
A server I moderate has a text channel where community members offer to help people with their tech support issues with their computers and such.
The problem is that people join, and despite having a set of rules that they have to accept before they even get access to all the channels, immediately post their issues in the main text channel used for just chatting.
This gets very annoying as new members join, disrupt the conversations to ask for tech support, and often need to be told to go to the proper channel for asking for tech support.

The idea would be to show a warning when users join the general text channel for the first time, making sure they know that the general chat channel IS NOT for asking for tech support help.


I'm sure others can find different uses for this feature, but it'd definitely be a good one IMO.