Linear bearing "hull" library

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This module, referred to as "bearingHull", creates hulls with caps specifically designed for LM bearings in sizes 3, 4, 5, 6, 8, and 10. To use it, you need to input the model number of your preferred bearing size. Additional options include flipping the hull (right), rotating cutouts and screw posts around the hull (angle), extending screw posts for the entire length of the hull (full), and generating a solid block for differencing (cutout). An example usage is "bearingHull(model=8, right=false, angle=0, cutout=false, full=false)". The bearingCap module requires only one argument: the model number. For instance, to use it with an LM8 bearing, you would type "bearing_cap(model=8)". The screw posts are designed for M4 screws in most cases, but for LM3 and LM4 bearings, M3 screws are used instead. Moreover, the bearings-expanded.scad file contains an extended list of 600 series bearings, which can be utilized after loading MCAD's bearing library by simply including (not using) it. However, this feature remains untested as of now.