cad/netgen-lvs: Update 1.5.290 => 1.5.300

Changelogs:

• https://github.com/RTimothyEdwards/netgen/compare/1.5.290...1.5.300

• Remove tar:tgz from USES as it's a default value
• Remove tcl from USES as tk already implies tcl
• Use predefined ${TCL_LIBDIR} and ${TK_LIBDIR} from Mk/Uses/tcl.mk
• Pet portclippy(1) and portfmt(1)

Approved by: yuri@ (Mentor)

Differential Revision: https://reviews.freebsd.org/D52671