JGAurora A5 bltouch mount

bltouch mount for JG Aurora A5.
you need Screws M3 with 15mm thread
one for normal fan ducts, one for the JG MKII duct
i used this calibration tool to set up the height.
https://www.thingiverse.com/thing:2263497

my settings for the halo type in marlin 1.1.8c for JG Aurora
yours might be different!

#define X_PROBE_OFFSET_FROM_EXTRUDER 16 // X offset: -left +right [of the nozzle]
#define Y_PROBE_OFFSET_FROM_EXTRUDER -35 // Y offset: -front +behind [the nozzle]
#define Z_PROBE_OFFS