### What?
Moving maintenance to a separate repository.
### Why?
I want to make these actions reusable in other projects as they seem to work well in the Next.js repository.
### How?
The code is moved to https://github.com/balazsorban44/nissuer
I tested it on my fork, and all the following functionality is preserved: https://github.com/balazsorban44/next.js/issues/56
- [x] Close/lock/comment without a valid reproduction link
- [x] Minimize "+1"
- [x] Add labels based on user selection
- [x] Add comment based on the maintainer's label (eg.: "please add a complete reproduction")