K.O.Y and German layout for several boards (#14991)

* Added accent.

* Added keymap for 5x6 dactyl manuform on KOY layout

* Added xd75 folder that is not in the main repo anymore?

* Added keymap for naked48 on KOY layout

* Added keymap for splitreus62 on KOY layout

* Added keymap for Dactyl Manuform 4x6 with RGB LEDs and K.O,Y layout

* Fixed error where handedness was not correctly determined because of combining vbus pins of both controllers.

* Replaced dynamic macros bith backspace and delete.

* Changed detecting handedness from detecting usb communication to checking a wired pin. This avoids problems when booting the PC, where VBUS is already high, but no communication is happening -> both halves think they are not master.

* Update keyboards/handwired/dactyl_manuform/4x6/keymaps/scheiklp/rules.mk

Co-authored-by: Drashna Jaelre <drashna@live.com>

* Update keyboards/naked48/keymaps/scheiklp/keymap.c

Co-authored-by: Drashna Jaelre <drashna@live.com>

* Update keyboards/naked48/keymaps/scheiklp/keymap.c

Co-authored-by: Drashna Jaelre <drashna@live.com>

* Update keyboards/naked48/keymaps/scheiklp/keymap.c

Co-authored-by: Drashna Jaelre <drashna@live.com>

* Update keymap.c

Added copyright

* Update config.h

* Update rules.mk

* Updated files according to PR requests.

* Update keyboards/xd75/config.h

Co-authored-by: Drashna Jaelre <drashna@live.com>

* Update keyboards/xd75/config.h

Co-authored-by: Drashna Jaelre <drashna@live.com>

* Update keyboards/xd75/keymaps/default/keymap.c

Co-authored-by: Drashna Jaelre <drashna@live.com>

* Update keyboards/xd75/config.h

Co-authored-by: Drashna Jaelre <drashna@live.com>

* Removed duplicate code. Updated copyright info.

* Restored readme

Co-authored-by: Drashna Jaelre <drashna@live.com>

keyboards/xiudi/xd75/keymaps/scheiklb/rules.mk

@@ -0,0 +1,17 @@
+# Copyright 2021 Paul Maria Scheikl (@ScheiklP)
+# SPDX-License-Identifier: GPL-2.0-or-later
+
+BOOTMAGIC_ENABLE = no       # Virtual DIP switch configuration(+1000)
+MOUSEKEY_ENABLE = no        # Mouse keys(+4700)
+EXTRAKEY_ENABLE = yes       # Audio control and System control(+450)
+CONSOLE_ENABLE = no         # Console for debug(+400)
+COMMAND_ENABLE = yes        # Commands for debug and configuration
+NKRO_ENABLE = yes           # Nkey Rollover - if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
+BACKLIGHT_ENABLE = no       # Enable keyboard backlight functionality
+MIDI_ENABLE = no            # MIDI support (+2400 to 4200, depending on config)
+AUDIO_ENABLE = no           # Audio output on port C6
+UNICODE_ENABLE = no         # Unicode
+BLUETOOTH_ENABLE = no       # Enable Bluetooth with the Adafruit EZ-Key HID
+RGBLIGHT_ENABLE = no        # Enable WS2812 RGB underlight.
+SLEEP_LED_ENABLE = no       # Breathing sleep LED during USB suspend
+TAP_DANCE_ENABLE = no       # Enable Tap Dancing