Add oriented bounding box axis options for Bounding Ruler

Previously, vtkRulerLineForInput could compute a ruler line for one of the X, Y, or Z axes of the axis-aligned bounding box of the input dataset. This commit adds three new options that enable the selection of an axis relative to the object oriented bounding box around the input data.

One caveat is that to compute the oriented bounding box, all the points in the data set must be copied over to rank 0. This is not feasible if the data doesn't fit into a single rank's memory, obviously.

Exposed these options in the ParaView filter as well.