[Keyboard] Add Kangaroo (#10511)

* roo initial

* update scannign t imes

* enable dma

* rename kangaroo

* updates

* update rules.mk

* keymap

* fix up config

* fix reamde

* fix up config

* update license headers

* rules.mk update

* info json

* Update keyboards/xelus/kangaroo/rules.mk

keyboards/xelus/kangaroo/rules.mk

@@ -0,0 +1,21 @@
+# MCU name
+MCU = STM32F072
+
+# Build Options
+#   comment out to disable the options.
+#
+
+BOOTMAGIC_ENABLE = lite     # Virtual DIP switch configuration
+MOUSEKEY_ENABLE = yes       # Mouse keys
+EXTRAKEY_ENABLE = yes       # Audio control and System control
+CONSOLE_ENABLE = yes        # Console for debug
+COMMAND_ENABLE = yes        # Commands for debug and configuration
+SLEEP_LED_ENABLE = no       # Breathing sleep LED during USB suspend
+NKRO_ENABLE = yes           # USB Nkey Rollover
+RGBLIGHT_ENABLE = no        # Enable keyboard RGB underglow
+BLUETOOTH_ENABLE = no       # Enable Bluetooth
+AUDIO_ENABLE = no           # Audio output
+EEPROM_DRIVER = i2c
+
+# Enter lower-power sleep mode when on the ChibiOS idle thread
+OPT_DEFS += -DCORTEX_ENABLE_WFI_IDLE=TRUE