[Keyboard] Add support for db63 hotswap rbg (#7771)

* correct the matrix pin for db63

* first correct layout

* adding RGB support for db63

* adding backlighting keycode

* enable back extension

* update readme for the bootloader

* correct the capslock pin

* update correct info.json and layout following suggestion

* editing contact

* Update keyboards/db/db63/README.md

Co-Authored-By: James Young <18669334+noroadsleft@users.noreply.github.com>

* Update keyboards/db/db63/README.md

Co-Authored-By: James Young <18669334+noroadsleft@users.noreply.github.com>

Co-authored-by: James Young <18669334+noroadsleft@users.noreply.github.com>

keyboards/db/db63/rules.mk

@@ -0,0 +1,24 @@
+# MCU name
+MCU = atmega32a
+
+# Bootloader selection
+#   Teensy       halfkay
+#   Pro Micro    caterina
+#   Atmel DFU    atmel-dfu
+#   LUFA DFU     lufa-dfu
+#   QMK DFU      qmk-dfu
+#   ATmega32A    bootloadHID
+#   ATmega328P   USBasp
+BOOTLOADER = bootloadHID
+
+# build options
+BOOTMAGIC_ENABLE = no
+MOUSEKEY_ENABLE = yes
+EXTRAKEY_ENABLE = yes
+CONSOLE_ENABLE = no
+COMMAND_ENABLE = yes
+BACKLIGHT_ENABLE = yes
+RGBLIGHT_ENABLE = yes
+WS2812_DRIVER = i2c
+
+OPT_DEFS = -DDEBUG_LEVEL=0