✨ Auto-thread slowmode option

[n1ckoates]

This pull request adds slowmode option to /configure auto-threading with the possible options:

• Off (DEFAULT)
• 5 seconds
• 30 seconds
• 1 minute
• 5 minutes
• 15 minutes
• 1 hour
• 6 hours

This option is used as an auto-thread's default slowmode.

The value for each option in the dropdown menu is the corresponding seconds as a string. This is converted & stored as a number in configureAutothreading().

[MarcusOtter]

Tested it and it seems like it is working well, but Needle requires additional permissions to set the slowmode (probably Manage Threads), and if it doesn't have those permissions it just does nothing when a message is sent. We should probably handle that more graciously. I'm thinking we should check that the bot has the required permissions both when you first invoke the command (and not enable auto-threading if the bot does not have required permissions), and when we try to create a thread (and probably respond publicly if Needle is missing permissions to do slowmode).

We should also add a note in the parameter description that it requires a certain permission if it's changed from the default.

The error we get in console when it's missing permissions (but I don't think we should use this error with try/catch to handle the permissions, we should check it properly, see permissionHelpers.ts):

DiscordAPIError: Missing Access
    at RequestHandler.execute (C:\path\discord-needle\node_modules\discord.js\src\rest\RequestHandler.js:350:13)
    at processTicksAndRejections (node:internal/process/task_queues:96:5)
    at async RequestHandler.push (C:\path\discord-needle\node_modules\discord.js\src\rest\RequestHandler.js:51:14)
    at async ThreadManager.create (C:\path\discord-needle\node_modules\discord.js\src\managers\ThreadManager.js:132:18)
    at async autoCreateThread (C:\path\discord-needle\dist\handlers\messageHandler.js:102:20)
    at async handleMessageCreate (C:\path\discord-needle\dist\handlers\messageHandler.js:46:5)
    at async Client.<anonymous> (C:\path\discord-needle\dist\index.js:62:51) {
  method: 'post',
  path: '/channels/481567884829786114/messages/944637857295921152/threads',
  code: 50001,
  httpStatus: 403,
  requestData: {
    json: {
      name: '🆕 LeMorrow (2022-02-19)',
      auto_archive_duration: 1440,
      type: 11,
      invitable: undefined,
      rate_limit_per_user: 60
    },
    files: []
  }
}

[n1ckoates]

We can easily upgrade Needle's permissions by sending an updated invite link. If you invite a bot that's already in your server, it will change its permissions.

[MarcusOtter]

It's also that I don't want to force people to add this permission. If you're not using this feature, there's no reason for Needle to have that permission.

[MarcusOtter]

Awesome, thank you so much for this, and sorry it took so long to review! Tried it out and it works great, code looks very good too. You're a star ✨

[MarcusOtter]

Ops, pulled the trigger a bit too early, the code was checking if Needle had Manage Threads every time you ran /configure auto-threading regardless of the input, added this:

NOW it's perfect 😄