Display tweaks for qol

[LeoBosse]

Would it be possible to add a few tweaks for the display of the FFT and the waterfall?

• Being able to choose the rounding value of the frequency labels of the FFT spectrum. When zooming in, the labels keep the same rounding at ~10 kHz and make it hard to know exactly the frequency I'm looking at. possible solution : increase the number of digits when more than 2 labels are identical and increase label spacing if necessary to avoid overlaps.

• Adding some kind of timestamps on the waterfall for easier tracking in time. Could be a button to add timestamps on the left of the waterfall every X frames.

For context, I'm trying to detect meteor echoes with GRAVES. I join a screenshot to show exactly what I mean. I might try to look into the code, but I'm no expert...

Thanks in advance for your consideration.