plotter: Allow setting number of decimal places to be displayed

[rafaellehmkuhl]

This way variables in units like lat/long or radians can show correctly, instead of just being cropped or appearing as 0.00.

[rafaellehmkuhl]

@ES-Alexander if you could review this one as well, it allows the user to specify the number of digits, which helps with values like 0.0012345 or coordinates.

[ES-Alexander]

Seems to work fine :-)

I do think it could be nice to have the Data Point controls in a single line, instead of two rows, e.g.

[Decimal places] || [ ] Limit samples [Maximum samples]

but up to you 🤷

[rafaellehmkuhl]

Seems to work fine :-)

I do think it could be nice to have the Data Point controls in a single line, instead of two rows, e.g.

[Decimal places] || [ ] Limit samples [Maximum samples]

but up to you 🤷

Will change before merging.