DIP Verticalizer

I got tired of bending the IC legs on the table and spent the afternoon designing this. I've used the squeezy tools before and had pretty OK success with them, but this design is easier to integrate into other things I keep on my workbench at all times. I like the roller bearing design by @BillyBag2 and after some research found that there are many commercial designs that use this track/bearing design, such as the Hakko FT-100/FT-200.

To use, place the DIP on the rail on the longer end and slide it back and forth across the bearings a couple of times. The rail has a -7 degree angle to it, and the bearings have a -9 degree angle so the bearings are closest at the bottom of the legs. The legs spring back a bit after they leave the bearings and end up close to vertical (although slightly splayed still).

The angle of the pillar can be adjusted with the `chip_leg_a` parameter and the length of the device can be set with the `block_l` parameter. Distance between the bearing and the pil