scripts: stm32cubeprogrammer: Add 2 new options for start and download

Implement possibility to specify options for --start and --download
arguments.
These options are implemented as lists to better fit STM32CubeProgrammer
programming model.

This options are required to enable the programming of STM32N6 in USB-DFU
mode, which requires "-d my.bin 0x1 -s noack" arguments list.

Signed-off-by: Erwan Gouriou <erwan.gouriou@st.com>