Needs testing: raise to max height then return or probe

[dlang]

This PR attempts to make bit changes easier.
It adds a button that will raise the bit from wherever it is to a pre-configured max height (53mm by default) and then if you don’t have a probe, when you hit the button again it drops it back down to the prior location.

If you do have a probe, it should probe for the bit length when you click the button.

Add bit change height feature with configurable height and universally available smart button behavior