[Keyboard] Add support for Model M USB C Controller (#7393)

* added usb c model m

* added readme

* Update keyboards/ashpil/modelm_usbc/rules.mk

* Update keyboards/ashpil/modelm_usbc/rules.mk

* Update keyboards/ashpil/modelm_usbc/rules.mk

* Update keyboards/ashpil/modelm_usbc/rules.mk

* Update keyboards/ashpil/modelm_usbc/rules.mk

* Update keyboards/ashpil/modelm_usbc/rules.mk

* cleaned up code

* removed combo from keymap

* added reset to default

* Update keyboards/ashpil/modelm_usbc/rules.mk

* bootmagic and simplifying default

* Update rules.mk

* removed duplicates

* updated readme

* Update keyboards/ashpil/modelm_usbc/README.md

* Update modelm_usbc.h

* Update keyboards/ashpil/modelm_usbc/keymaps/default/keymap.c

* Update keyboards/ashpil/modelm_usbc/keymaps/default/keymap.c

* Update keyboards/ashpil/modelm_usbc/keymaps/default/keymap.c

* full support for either ANSI or ISO

* Update keyboards/ashpil/modelm_usbc/info.json

* Update keyboards/ashpil/modelm_usbc/info.json

* Update keyboards/ashpil/modelm_usbc/info.json

* Resize the ISO Enter key

* ANSI Enter and Left Shift keys resize

keyboards/ashpil/modelm_usbc/rules.mk

@@ -0,0 +1,33 @@
+# MCU name
+MCU = at90usb1286
+
+# Bootloader selection
+#   Teensy       halfkay
+#   Pro Micro    caterina
+#   Atmel DFU    atmel-dfu
+#   LUFA DFU     lufa-dfu
+#   QMK DFU      qmk-dfu
+#   ATmega32A    bootloadHID
+#   ATmega328P   USBasp
+BOOTLOADER = atmel-dfu
+
+# Build Options
+#   change yes to no to disable
+#
+BOOTMAGIC_ENABLE = lite     # Virtual DIP switch configuration
+MOUSEKEY_ENABLE = no        # Mouse keys
+EXTRAKEY_ENABLE = yes       # Audio control and System control
+CONSOLE_ENABLE = no         # Console for debug
+COMMAND_ENABLE = no         # Commands for debug and configuration
+# Do not enable SLEEP_LED_ENABLE. it uses the same timer as BACKLIGHT_ENABLE
+SLEEP_LED_ENABLE = no       # Breathing sleep LED during USB suspend
+# if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
+NKRO_ENABLE = no            # USB Nkey Rollover
+BACKLIGHT_ENABLE = no       # Enable keyboard backlight functionality on B7 by default
+RGBLIGHT_ENABLE = no        # Enable keyboard RGB underglow
+MIDI_ENABLE = no            # MIDI support
+UNICODE_ENABLE = no         # Unicode
+BLUETOOTH_ENABLE = no       # Enable Bluetooth with the Adafruit EZ-Key HID
+AUDIO_ENABLE = no           # Audio output on port C6
+FAUXCLICKY_ENABLE = no      # Use buzzer to emulate clicky switches
+HD44780_ENABLE = no         # Enable support for HD44780 based LCDs