Added 3 sample Eagle BRD files so folks can see how this amazing widget

Added 3 sample Eagle BRD files so folks can see how this amazing widget works as well as having 3 test files. I’ve never gotten the Adafruit Ruler to work because it uses generic rectangles for the pads.

Nice, but What happen with GRBL workspace? All of these new features only are in tinyG.

@Camilo_A_C that would take some contributions from the community. This is an open source project, so it can only keep getting updates from the help of folks.