[Keyboard] Add uzu42 keyboard (#6842)

* initial commit

* OLEDに表示するロゴをuzuのものに差し替えた

* delete undefault keymaps

* delete info.json

* delete pro_micro.h

* remove USE_Link_Time_Optimization check

* Moved constant defined for each keymap.c to rev1.h

* update layer_state_reader.c

* Rename Uzu42 to uzu42

* remove bootloader.h include

* LAYOUT_kc to LAYOUT

* delete keymap level rules.mk

* update readme.md

* remove persistent_default_layer_set function.

* try refactor to use split_common and use OLED driver

* Revert "try refactor to use split_common and use OLED driver"

This reverts commit 5a9afceacb450ca9eca8a146b64c24d0e0925dd8.

* Update keyboards/uzu42/rev1/config.h

Co-Authored-By: fauxpark <fauxpark@gmail.com>

* Update keyboards/uzu42/rev1/rev1.h

Co-Authored-By: fauxpark <fauxpark@gmail.com>

* Update keyboards/uzu42/rev1/rev1.h

Co-Authored-By: fauxpark <fauxpark@gmail.com>

* Update keyboards/uzu42/rules.mk

Co-Authored-By: fauxpark <fauxpark@gmail.com>

* Remove lines already defined in QMK

* Update keyboards/uzu42/rules.mk

Co-Authored-By: fauxpark <fauxpark@gmail.com>

* Update keyboards/uzu42/rules.mk

Co-Authored-By: fauxpark <fauxpark@gmail.com>

* Update keyboards/uzu42/rules.mk

Co-Authored-By: fauxpark <fauxpark@gmail.com>

* replaced comment block

* Update keyboards/uzu42/config.h

Co-Authored-By: Drashna Jaelre <drashna@live.com>

* Revert "Revert "try refactor to use split_common and use OLED driver""

This reverts commit a7849216f49a411558d4cfdcfbf3e202defe892a.

* fix setting for RGBLED

* The default of OLED_DRIVER_ENABLE has been changed to no.

* Delete unuse block.

* Remove unnecessary keycode definitions.

* Remove unuse custom keycode.

* Remove not needed code.

* Remove not called code.

* Remove code overwritten by the core.

* Remove LAYOUT_kc macro.

* Moved the definition of the layer block to keymap.c.

* Removed unuse variable.

* Remove code overwritten by the core too.

* incorporate layer changes

* Moved src rule to keymap from rev1.

* Removed rgb_state_reader.c from lib folder and the code move to the keymap.c

* Removed layer_state_reader.c from lib folder and the code move to the keymap.c

* Removed logo_reader.c from lib folder and the code move to the keymap.c

* Removed keylogger.c from lib folder and the code move to the keymap.c

* Moved glcdfont_uzu42.c from lib folder to the default keymaps folder.

* Removed unused files.

keyboards/uzu42/rules.mk

@@ -0,0 +1,40 @@
+# if firmware size over limit, try this option
+# CFLAGS += -flto
+
+# MCU name
+MCU = atmega32u4
+
+# Bootloader selection
+#   Teensy       halfkay
+#   Pro Micro    caterina
+#   Atmel DFU    atmel-dfu
+#   LUFA DFU     lufa-dfu
+#   QMK DFU      qmk-dfu
+#   ATmega32A    bootloadHID
+#   ATmega328P   USBasp
+BOOTLOADER = caterina
+
+# Use split_common libraries
+SPLIT_KEYBOARD = yes
+
+DEFAULT_FOLDER = uzu42/rev1
+
+# Build Options
+#   change to "no" to disable the options, or define them in the Makefile in
+#   the appropriate keymap folder that will get included automatically
+#
+BOOTMAGIC_ENABLE = no       # Virtual DIP switch configuration(+1000)
+MOUSEKEY_ENABLE = no       # Mouse keys(+4700)
+EXTRAKEY_ENABLE = no       # Audio control and System control(+450)
+CONSOLE_ENABLE = no         # Console for debug(+400)
+COMMAND_ENABLE = no        # Commands for debug and configuration
+NKRO_ENABLE = no            # 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 controls
+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. 
+# Do not enable SLEEP_LED_ENABLE. it uses the same timer as BACKLIGHT_ENABLE
+SLEEP_LED_ENABLE = no    # Breathing sleep LED during USB suspend
+OLED_DRIVER_ENABLE = no      # OLED display