devel/raylib: Install missing header files
The header files:
- raymath.h
- rlgl.h
- physac.h
were missing from the installation and pkg-plist.
Also, while here, cleanup some style nits and bump PORTREVISION.
PR: 251819
Submitted by: Martin Filla <freebsd@sysctl.cz> (maintainer)
Reported by: Mattias Wikstrom <burke@yagrebu.net>
Reviewed by: osa (mentor)
Approved by: osa (mentor)
Differential Revision: https://reviews.freebsd.org/D27776