cad/surfer: Introduce new port

[jbo]

Finalize port

[jbo]

Fix plist

[dch]

LGTM, just a few quibbles from portlint/portfmt/portclippy, address those and & you're good to go!

dch@wintermute /u/p/c/surfer> portlint -AC
WARN: /usr/ports/cad/surfer/pkg-descr: contains less than 2 lines, make it longer if possible.(currently 1 line)
WARN: Consider to set DEVELOPER=yes in /etc/make.conf
0 fatal errors and 2 warnings found.

dch@wintermute /u/p/c/surfer> cat pkg-descr
A waveform viewer with a focus on a snappy usable interface, and extensibility.

dch@wintermute /u/p/c/surfer> portfmt -t -i Makefile

dch@wintermute /u/p/c/surfer> portclippy --strict Makefile
# PORTNAME block
PORTNAME
DISTVERSIONPREFIX
DISTVERSION
CATEGORIES

# Maintainer block
MAINTAINER
COMMENT
WWW

# License block
LICENSE
LICENSE_FILE

# USES block
USES
+USE_GITHUB
+GH_TUPLE
USE_GITLAB
GL_ACCOUNT
-USE_GITHUB
GL_TUPLE
-GH_TUPLE

# Packaging list block
PLIST_FILES
dch@wintermute /u/p/c/surfer> gst
## main...dch/main [ahead 1]
 M Makefile