Add support for scroll(1)

Browse Source

Scroll is a program that stores all the lines of its child and be used in st as
a way of implementing scrollback.

This solution is much better than implementing the scrollback in st itself
because having a different program allows to use it in any other program
without doing modifications to those programs.

...

This commit is contained in:

500 Internal Server Error

Gitea Version: 1.28.0+dev-505-g31b4d79a84