[Keyboard] Add Keychron V6 (#19498)

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

keyboards/keychron/v6/iso_encoder/rules.mk

@@ -0,0 +1,27 @@
+# Build Options
+#   change yes to no to disable.
+#
+BOOTMAGIC_ENABLE = yes      # Enable Bootmagic Lite
+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
+NKRO_ENABLE = yes           # Enable USB N-key Rollover
+BACKLIGHT_ENABLE = no       # Enable keyboard backlight functionality
+RGBLIGHT_ENABLE = no        # Enable keyboard RGB underglow
+AUDIO_ENABLE = no           # Audio output
+ENCODER_ENABLE = yes        # Enable Encoder
+DIP_SWITCH_ENABLE = yes
+RGB_MATRIX_ENABLE = yes
+RGB_MATRIX_DRIVER = CKLED2001
+EEPROM_DRIVER = wear_leveling
+WEAR_LEVELING_DRIVER = embedded_flash
+
+# Enter lower-power sleep mode when on the ChibiOS idle thread
+OPT_DEFS += -DCORTEX_ENABLE_WFI_IDLE=TRUE
+
+# custom matrix setup
+CUSTOM_MATRIX = lite
+
+VPATH ?= keyboards/keychron/common
+SRC += matrix.c