alif/tinyusb_port: Add Alif TinyUSB DCD driver.

From https://github.com/alifsemi/alif_vscode-tinyusb.git,
commit c79f39361d334ee44f44fed30c56e70dbb368649

Signed-off-by: Damien George <damien.p.george@gmail.com>
Signed-off-by: iabdalkader <i.abdalkader@gmail.com>

Author: dpgeorge