Guide line - more display options

[Gammalerik]

It would be nice to be able to have another optional choice to display on the guide line in addition to "draw distance" and "draw azimuth". That would be "draw time to target".

I know that this choice is available in the "guide along path top panel", but this panel is not made available when guiding to a single point.

[Menion]

this value can be visible in top panel under "guiding item". Anyway I plan to increase support for custom screens so this should be done there