[Keymap] Add BB8520 trackpad support for CrKbd (#5925)

* Add vlukash CrKbd keymap to support trackpad adapter.

The trackpad adapter uses Elite-C board that has five extra pins.
Also SPI pins are taken for trackpad, keymap config updates column data
pins for matrix scan.

* Update vlukash keymap

* Enable pointing devide, configure mouse BTN1

* Set TAPPING_TERM to 300

* Add support for the BlackBerry 8520 trackpad

* Add vlukash keymap for master-right no-trackpad version

* Remap backspace

* Set EXTRAKEY_ENABLE = yes

* Update thumb keys mappings

* Set bootloader to atmel-dfu

* Sync keymap

* Add scrolling support

* Make debug LEDS conditional

* Add support for both flex and no-flex PCBs

* Add readme and rename root folders

* Update readme file with blog link

* Fix readme file formatting

* Remove ADJUST keycode, code cleanup.

* Add Win key to the keymap.

keyboards/crkbd/keymaps/vlukash_trackpad_right/rules.mk

@@ -0,0 +1,10 @@
+# Build Options
+POINTING_DEVICE_ENABLE = yes # Generic Pointer, not as big as mouse keys hopefully.
+MOUSEKEY_ENABLE = yes        # Mouse keys(+4700)
+EXTRAKEY_ENABLE = yes        # Audio control and System control(+450)
+RGBLIGHT_ENABLE = yes        # Enable WS2812 RGB underlight.
+
+BOOTLOADER = atmel-dfu
+
+# Add support for the BB 8520 trackpad
+SRC += trackpad.c