Anthead Dragon SF LEDs

This is a modification of the original Anthead to add one or two NeoPixel LEDs pointed down toward the hotend contact area, to provide better visibility of printing progress. NeoPixels can be soldered or plugs.

If you would like to use the Rainbow Hex LED with Anthead, the LED mount from https://github.com/FYSETC/FYSETC-VORON-2.4-R2-Pro/blob/main/STLs/Gantry/X_Axis/X_Carriage/Voron-Stealthburner/Stealthburner/%5Bo%5D_stealthburner_LED_carrier_rev2.STL Fysetc fits perfectly in Anthead.

Added a NeoPixel LED mount to the hotend module.