x11-fonts/showfont: Update to 1.0.7

Update WWW and pkg-descr.
Add LICENSE.

https://lists.x.org/archives/xorg-announce/2022-August/003207.html
https://lists.x.org/archives/xorg-announce/2025-May/003602.html

PR: 287714
Approved by: x11 (arrowd)
Approved by: fluffy (mentor)