S parameters menu improvements

[bvernoux]

Today if we want to capture full s2p parameters and export them as s2p we shall do at least 3 steps:

• S parameters->Capture S*1
• S parameters->Capture S*2 (for full 2port VNA else it can be skipped for T/R VNA)
• S parameters->Export s2p

Please add an option to "Capture and Export s2p" in one click (doing the 2 or 3 steps previously mentioned) with export to s2p file (with default name like date_time.s2p) The aim is to export S11 & S21 on a T/R VNA in a s2p file in one step (or Full S11, S21, S12, S22 on full-2 port VNA)