ANET A8 Fan Mod + BlTouch Adjustable Mount

Hello,

this a remix of 2 things (see remix sources).

It's a simple print, that allow you to move the FAN for access filament loader, and an ajustable bltouch support.

i use this settings for probe configuration on Marlin :

define X_PROBE_OFFSET_FROM_EXTRUDER 57
define Y_PROBE_OFFSET_FROM_EXTRUDER -50

for Z it's ajustable so can't add a value.

comments are welcome :)