[Keyboard] Add Buzzard support (#15493)

* add buzzerd

(untested, WIP)

* configured linear actuator and fixed keymap

* configuration tweaks and added custom keymap

* add custom tapping term for home row mod

* added readme

* remove ionide folder

* added scroll function to trackpoint

* keymap reworked

* using one shot shift and removed dynamic macros

* reworked default keymap

* adapted to latest qmk changes

* remove caps word from default keymap

* use provided coding guidelines

* use get_highest_layer in favour  of biton32

* fixed formatting

* remove unnecessary define statement

keyboards/buzzard/rules.mk

@@ -0,0 +1,22 @@
+# MCU name
+MCU = atmega32u4
+
+# Bootloader selection
+BOOTLOADER = atmel-dfu
+
+# Build Options
+#   change yes to no to disable
+#
+BOOTMAGIC_ENABLE = no       # 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 = no            # Enable N-Key Rollover
+BACKLIGHT_ENABLE = no       # Enable keyboard backlight functionality
+RGBLIGHT_ENABLE = no        # Enable keyboard RGB underglow
+AUDIO_ENABLE = no           # Audio output
+SPLIT_KEYBOARD = yes
+LTO_ENABLE = yes
+
+DEFAULT_FOLDER = buzzard/rev1