By Bushra Shakhshir | ERBIL, IRAQ     https://cdscdn.reuters.com/r04/6/6/5/0/05521/u-8001-mp4-h264-640x360-25-300-1200000-aac-1-44100-96000.mp4     (Reuters) – As Iraqi forces fight to retake the northern city of Mosul from ISIS, an artist in nearby Erbil is chiseling at clay in a tiny, unheated...