`supportutils` plugin v0.4.4

[Jerrie-Aries]

Changelog

Fix potential ratelimits issue:

• As Interaction.followup uses global ratelimits and not per interaction, we have changed it to use Interaction.response instead.
• Add ._temp_cached_users attribute to ContactView. This is to prevent unecessary repeated responses when same user spamming the button.

Others:

• No longer deal with Thread.wait_until_ready() since we already sent the confirmation before starting to create thread anyways. So now we just check if the thread exists. If exists, we just send error response and return.
• Fix UnknownInteraction error when check fails. To reproduce (in order):
  • Create contact menu (if there isn't one)
  • confirm_thread_creation set to True
  • DM the bot, leave the confirmation message untouched
  • Press the Contact button on the contact message
• Rename ContactManager.create to .create_thread.
• Other minor code improvements.

[Jerrie-Aries]

Handling thread creation using ThreadManager.create() in core/utils.py in a4333b1 is reverted.