Feature request: Save output of M503 command as part of print job

[edgauthier]

It would be nice if PrintJobHistory could save the output of M503 (captured at the start of a print perhaps) to know what the printer firmware was configured for prior to executing any GCODE for a print. This would help in comparing settings from previous prints if changes were made to firmware settings (and aren't captured in the slicer settings).

Thanks for considering!