[Keymap] Added the K.O,Y layout for the xd75 and atreus62 boards (#9079)

* added koy layout to qmk on xd75 board

* added koy keymap for the atreus62 board

* reduced time for autoshift

* added documentation

* changed layer 7 to a tap toggle and adjusted mouse speed a little

* Update keyboards/xd75/keymaps/ScheiklP/koy_keys_on_quertz_de_latin1.h

* Update keyboards/xd75/keymaps/ScheiklP/koy_keys_on_quertz_de_latin1.h

* Update keyboards/xd75/keymaps/ScheiklP/koy_common.h

* Update keyboards/atreus62/keymaps/ScheiklP/koy_common.h

* Update keyboards/atreus62/keymaps/ScheiklP/koy_keys_on_quertz_de_latin1.h

* Update keyboards/atreus62/keymaps/ScheiklP/koy_keys_on_quertz_de_latin1.h

* changed keymap to lowercase name to conform with qmk guidelines

* Update keyboards/xd75/keymaps/scheiklp/rules.mk

remove unnecessary rules

* Update keyboards/atreus62/keymaps/scheiklp/rules.mk

remove unnecessary rules

* moved common files for koy layouts to the users folder and removed empty file

* Update keyboards/atreus62/keymaps/scheiklp/keymap.c

* Update keyboards/xd75/keymaps/scheiklp/readme.md

* Update keyboards/xd75/keymaps/scheiklp/readme.md

* Update keyboards/atreus62/keymaps/scheiklp/readme.md

* Update keyboards/atreus62/keymaps/scheiklp/readme.md

keyboards/xd75/keymaps/scheiklp/rules.mk

@@ -0,0 +1,6 @@
+BOOTMAGIC_ENABLE = no
+COMMAND_ENABLE = no
+RGBLIGHT_ENABLE = no
+DYNAMIC_MACRO_ENABLE = yes
+AUTO_SHIFT_ENABLE = yes
+KEY_LOCK_ENABLE = yes