Share 'Circles: Tangent, Tangent, Radius?'

Would it be possible to have these commands added to GH as they are in Rhino?   Also, drawing a circle from 3 Tangents is a very useful tool that i use quite frequently... I could well be missing an obvious work-around here, apologies if i am!   I'm trying to create this 'kidney-bean' shape in GH using the radius of 2 circles to control the shape with the option of being able to adjust the radius…