What you'd be looking for are bungs like this
this
You'll want the right type of glue and to be able to remove the tyre to fit it from the inside too. You'll also want to be confident you're repairing a hole that's OK to be repaired this way.
Me? I'd take it to a tyre shop that is happy repairing tubeless motorbike tyres (phone before hand, many wont).
Jambo
Edit,
this appears to be a much more complete kit.