Winos: add script to launch FVP on windows host

run_model_winos.cmd file is used to launch the model on windows
host machine booting winpe and winvos using vhd file.
WINOS_PATH and WORKSPACE variables needs to be set according to
your workspace and vhd path.

Signed-off-by: Vishnu Banavath <vishnu.banavath@arm.com>