scripts: sanitylib.py: Add support for STLINK-V3 probe
scripts: sanitylib.py: Add support for STLINK-V3 probe

Recent ST boards embed the new ST-Link probe V3.
It is advertised as "STLINK-V3", update sanitylmib to take it
into account.
In handle function, it is proposed to treat it separately as current
"STM32 STLink" as processing might differ in next future (hla_serial
deprecation).

Signed-off-by: Erwan Gouriou <de4d967452b83bb0e37525652734e7d9163b6a4c@linaro.org>

nashif/zephyr,finikorg/zephyr,zephyrproject-rtos/zephyr,zephyrproject-rtos/zephyr,galak/zephyr,zephyrproject-rtos/zephyr,Vudentz/zephyr,finikorg/zephyr,Vudentz/zephyr,Vudentz/zephyr,zephyrproject-rtos/zephyr,nashif/zephyr,zephyrproject-rtos/zephyr,galak/zephyr,nashif/zephyr,finikorg/zephyr,finikorg/zephyr,galak/zephyr,nashif/zephyr,galak/zephyr,finikorg/zephyr,Vudentz/zephyr,galak/zephyr,nashif/zephyr,Vudentz/zephyr,Vudentz/zephyr