* Added BIQU machine base files as well as BIQU B1 machine files.
* Fixed a variants settings version error.
* Updated base def by removing excluded materials and changing the pref to pla175
* Fixed the machine name value which should only take a default value and not also a value.
* Increased the max extruder feedrate to allow the default retraction speed.
* Removed comments from the quality profiles. Removed author from variants. Adjusted materials in quality profiles to refer to the 175 profiles directly.
* Enabled coasting by default in the B1 profile and increased the width of infill for the base profile.
* Updated all quality and variants configs to use settings version 16 in anticipation of release 4.8
* Final tweaks to B1 start gcode
* Added an ABL version of the B1 with tweaked start codes.
