devel/libtermkey: create port

This library allows easy processing of keyboard entry from terminal-based
programs. It handles all the necessary logic to recognise special keys,
UTF-8 combining, and so on, with a simple interface.

WWW: http://www.leonerd.org.uk/code/libtermkey/

PR: 198711
Submitted by: Anton Törnqvist <antont@inbox.lv>