New port: x11-clocks/p5-Tk-Clock: Clock widget with analog and digital display

This module implements a Canvas-based clock widget for perl-Tk with
lots of options to change the appearance.

Both analog and digital clocks are implemented.

WWW: https://metacpan.org/release/Tk-Clock

PR: 235823
Submitted by: Brian Scott <bscott@bunyatech.com.au>
Approved by: miwi (mentor)
Differential Revision: https://reviews.freebsd.org/D19339