[Keyboard] GH60 v1.3 (#10575)

* [Keyboard] GH60 v1.3 Support

* clean up info.json

Update key sizes and positioning.

* add readme

* add image to readme

* fix up info.json LAYOUT_all

* add LAYOUT_60_ansi

I'm guessing at this based on a photo of the PCB. Chances are high that this isn't fully functional.

* add matrix block comment to v1p3.h

* add default_ansi keymap

* add keymap readme files

* fix LAYOUT_60_ansi macro

* enable 60_ansi Community Layout support

* add layouts for 60_ansi_arrow

Add LAYOUT_60_ansi_arrow and LAYOUT_60_ansi_arrow_split_bs macros. (The user helping me test runs the split Backspace variant.)

* add Tsangan, HHKB, and 64_ansi layout macros

* add factory keymaps and layout info

* update copyright headers

I mean... if someone's gotta "own" this code...

* fix broken factory_* keymaps

keyboards/gh60/v1p3/rules.mk

@@ -0,0 +1,24 @@
+# MCU name
+MCU = atmega32u4
+
+# Bootloader selection
+BOOTLOADER = atmel-dfu
+
+# Build Options
+#   change yes to no to disable
+#
+BOOTMAGIC_ENABLE = lite     # Virtual DIP switch configuration
+MOUSEKEY_ENABLE = yes       # 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 = yes      # Enable keyboard backlight functionality
+RGBLIGHT_ENABLE = yes       # Enable keyboard RGB underglow
+BLUETOOTH_ENABLE = no       # Enable Bluetooth
+AUDIO_ENABLE = no           # Audio output
+
+LAYOUTS = 60_ansi 60_ansi_arrow 60_ansi_tsangan 60_hhkb 64_ansi