[Keyboard] z34 split keyboard by zigotica (#14582)

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

keyboards/z34/rules.mk

@@ -0,0 +1,28 @@
+# MCU name
+MCU = atmega32u4
+
+# Bootloader selection
+BOOTLOADER = caterina
+
+# Build Options
+#   change yes to no to disable
+#
+BOOTMAGIC_ENABLE = no      # Enable Bootmagic Lite
+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
+RGBLIGHT_ENABLE = no       # Enable keyboard RGB underglow
+AUDIO_ENABLE = no          # Audio output
+SPLIT_KEYBOARD = yes       # Split common
+LTO_ENABLE = yes           # Enables Link Time Optimization (LTO) which reduces the compiled size
+
+# There are no extra pins, so we make sure to disable OLED and Encoders
+OLED_SUPPORTED = no        # Enables the use of OLED displays
+ENCODER_SUPPORTED = no      # Enables the use of encoders
+