LCTH - RatRig V-Core 3.1 Toolhead mods: tensionless + beacon + dual linear

This is the LCTH, a collection of remixed components of the RatRig V-Core 3.1 Toolhead 1.0 to support front tensioners, the beacon sensor, and/or dual linear carriages.

IMPORTANT NOTES:

• NO TENSIONERS INCLUDED ON THE TOOLHEAD
  You will need to couple these parts with either a "back tensioner" (See BRS) or “front tensioners” like what is seen on the VC4 and backported to the 3.1 (See LHMM, MFBS, or others)
• Parts marked “DUAL” support dual linear carriages: one on top, one on bottom. (See the original, my remix or my option for hybrid CoreXY)
• Parts unmarked are compatible with any standard gantry solution with a single carriage (Stock 2020 extrusion, tubes, etc)

Feedback Requested:

• all other mods for the existing VC3.1 RRTH v1.0 should be compatible. If you notice any conflicts please let me know.
• The beacon positioning is not optimal, but should still work. From what I understand others have used it without issue, however I still have no beacon to test with. Again if you notice anything off in your use please let me know.

many modifications to support different configurations