added magnet jig

as5013-test/magnet-jig.ko

+from koko.lib.shapes import *
+
+carrier = circle(0,0,.25)
+
+r1 = .093/2
+bridge = .02
+os = .0
+carrier -= circle(0,0,r1)
+carrier -= circle(2*r1+os,0,r1)
+carrier -= circle(-2*r1-os,0,r1)
+carrier -= circle(0,2*r1+os,r1)
+carrier -= circle(0,-2*r1-os,r1)
+carrier -= rectangle(-2*r1,2*r1,-bridge,bridge)
+carrier -= rectangle(-bridge,bridge,-2*r1,2*r1)
+outline = circle(0,0,.3)
+cad.shape = carrier + (outline-outline)