Ender Hemera mods

This is a remix of many cool designs.

Hemera mount plate remixed from ryedesign one. Added guides and holes for M3 nuts for securing additional stuff on top of this plate.

This thing contains different parts:

- Normal mount plate or BFPTouch mount plate - modified with hole for long rod
- BFPTouch top mount - for modified plate above
- BFPTouch side mount
- Endoscope mount - for fun
- Endstop extender for 4020 fan, if fan collide with cup before endstop triggered

mount plates are using Hemera M3 bolts

Next parts are remix of Deoragekiss fan mount

- fan mount plate with proper position of bolt holes
requires 4 x M3x8 bolts with secret head
- fan duct optimized for printing without supports
requires 4 x M4x20 bolts with any head. One of bolts have tight clearance with fan mount plate

Next parts are remix of Multi_Color cable chain stuff:
- x cup for longer E3D High Torque motor
- Hemera cable chain end for plate
- cable chain start for x cup