Multiple Plot zoom and unzoom support

[TCL735]

When an app has multiple <Plot> components visible, there are cases where a user wants to zoom in one <Plot> (click-drag) and have that behavior reflected on all <Plot>s. Same for unzoom. (Giraffe may already have this for unzoom, but it should also work with zoom seamlessly). Make this behavior easier to implement.

There should be a way to do the following:

• allow multiple <Plot>s to be zoomed and unzoomed at the same time
• even when they have different dimensions
• access the default zoom and unzoom behavior from the custom callbacks for the domain
• set the min and max based on a percentage
• translate the mouse position offset using a percentage (of the <Plot> the user is interacting with) and sending it to all <Plot>s