misc/ansiweather: create port

AnsiWeather is a Shell script for displaying the current weather conditions
in your terminal, with support for ANSI colors and Unicode symbols.

Weather data comes from the OpenWeatherMap free weather API.

WWW: https://github.com/fcambus/ansiweather/

PR: 201097
Submitted by: Danilo G. Baio <dbaio@bsd.com.br>