x11-fonts/material-icons-ttf: create port

Official Material Design icon set from Google.
The icons are designed according to the official Material Design
guidelines at https://material.io/design

WWW: https://jossef.github.io/material-design-icons-iconfont

PR: 235198
Submitted by: voidanix <voidanix@420blaze.it>
Differential Revision: https://reviews.freebsd.org/D18862