Add timestamp for the read Sub-Ghz key

[usmanovbf]

Description of the feature you're suggesting.

It would be quite useful to know at which time key was found while I am riding a car. It would help me to find the place where it was found based on the chronology of my riding, for example, using some GPS tracker app.
Otherwise, it will be exhausting to remember where I read some of them.
Timestamp should have milliseconds I think

Anything else?

No response

[usmanovbf]

BTW, the timestamp is seen while Read mode (receiving mode) if I scroll them but it would be useful to keep the timestamp after saving the key. Thank you!