Draft: Added __info__ to calc motor controllers
I wanted to display few information from the slits.
But this can fit the calc motor controller
OH [1]: s1
Out [1]: ---------- ----------- -----------
reals user dial
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s1l 0.488 mm -0.435 mm
s1r 0.312 mm -0.835 mm
s1t 0.320 mm 0.320 mm
s1b 0.480 mm -1.320 mm
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pseudos user dial
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s1hg 0.800 mm 0.800 mm
s1ho 0.088 mm 0.088 mm
s1vg 0.800 mm 0.800 mm
s1vo -0.080 mm -0.080 mm
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