Dynamic DLOG filenames for scripts

[fietser28]

I would like to have an easy way not to overwrite DLOG files either by an autoincrement or date feature in the filename if they are started with a SCPI command:

• [ ] ## characters are replaced with an increasing number if a new DLOG is started. Number of ### indicates the number of digits uses, if the number overflows it still overwrites.
• [ ] %t wil insert date/time stamp, just like in user interface.

My use case is firmware sending SCPI to the BB3, but this MCU has not notion of time or history. It now always overwrites the previous measurement.