Add support for Scarlatti top row keycodes for virtual input devices

These keycodes are the default top row keys supported on the
Scarlatti layout.

See go/scarlatti-top-row for UX mocks

Bug: 429240027
Test: N/A

Flag: com.android.hardware.input.create_virtual_keyboard_api

Change-Id: I15b99102efb178c2a6f662ec8d92aa10ebdd1f0b