FlyingBear Reborn 2 StealthBurner mount

Few mm of build volume on the Y rail will be lost.

Additional hardware needed: pair M2.5x6 FHCS, few heat set inserts.

Warning! Do not even attempt to fire it up before clearance check. Requires some hardware modifications:

1. X endstop trigger must be filed away for few mm since endstop switch is located closer to the rail,
2. X endstop switch wires must be soldered directly to the switch's pcb,
3. Y endstop switch must be moved approx. 5mm forward to ensure printhead clearance,
4. Z endstop triggers may require some lift.

Thanks to VORON team for great work, oficial files can be found here: https://github.com/VoronDesign/Voron-Stealthburner.