Open Ticket 3.3.2!

added:

• you can now add images to the "messages"
• footers can have images now
• the claim button now also sends an embed
• added readonly adminroles for tickets

fixed:

• #58 fixed major error: Interaction not identified when (un)claiming
• fixed bug channel.isTextBased()
• all buttons & slash commands now first send a deferReply before actually replying
• added lots of async, await for better error handling
  And a lot of other small changes...