Add Jumpers configuration for SKR2 (#583)

* Initial work for BTT SKR2

* Fix typo in file name

* Remove old file

* Beautify README

* Cleanup PINs definition

* Revert back commented stuff for build size

* Remove the Rev.B in the name

* Remove old files

* Add wiring diagram for MCU X/Y/E

* Update readme file

* Add wiring diagram for MCU Z

* Add Klipper menuconfig selection

* Change instructions order

* Merge latest updates from master

* Add line return

* Update recommended settings

* Comment out recommended sensor

* Comment bed sensor

* Use controller fan instead

* Remove old thermistor types

* Put back heater_bed

* Add heater and stepper relation for controller fans

* Remove stepper and space

* Add missing Jumpers configuration

* Add missing Jumpers configuration

Co-authored-by: Marc Bernard <marc.guy.bernard@gmail.com>

firmware_configurations/klipper/TechnoPhreak/BTT_SKR_v2/README.md

@@ -24,6 +24,9 @@ https://github.com/bigtreetech/SKR-2/
 
   Thanks Chris !
 
+## Jumpers Configuration ##
+![SKR2 - MCU X/Y/E Wiring](SKR2-jumpers.jpg)
+
 ## Wiring Instructions ##
 ![SKR2 - MCU X/Y/E Wiring](SKR2-MCUXYE-wiring.jpg)
 ![SKR2 - MCU X/Y/E Wiring](SKR2-MCUZ-wiring.jpg)