Simplify key binding setup for interacting with the camera

This MR provides a simpler way to bind different kinds of camera movement to a combination of mouse button and modifier keys. The concept of interaction style manipulators is not new and existed in ParaView for a long time under the https://gitlab.kitware.com/paraview/paraview/-/tree/master/VTKExtensions/InteractionStyle?ref_type=heads subdirectory.

VTK now provides that functionality, so you can easily setup key bindings for the view using the vtkInteractorStyleManipulator class. This class lets you add manipulators that are bound to specific mouse and modifier key (Alt, Ctrl, Shift) combinations. With several built-in manipulators available, you can bind each to different button and modifier combination without writing custom interactor styles!

For example:

from vtkmodules.vtkRenderingCore import vtkCameraManipulator
from vtkmodules.vtkInteractionStyle import (vtkInteractorStyleManipulator,
                                            vtkJoystickFlyIn,
                                            vtkJoystickFlyOut,
                                            vtkTrackballRotate,
                                            vtkTrackballPan,
                                            vtkTrackballZoom,
                                            vtkTrackballRoll,
                                            vtkTableTopRotate,
                                            vtkTrackballZoomToMouse,
                                            vtkTrackballEnvironmentRotate,
                                            vtkTrackballMultiRotate)
from vtkmodules.vtkRenderingCore import vtkRenderWindowInteractor
# An example that assigns different mouse and modifier key combinations to particular manipulators.
# Each row corresponds to a modifier key (no modifier, Ctrl, Shift, Alt) and each column corresponds to a mouse button (Left, Middle, Right).
manipulator_classes = [
    # no modifier¡
    # Left, Middle, Right
    [vtkTrackballRotate, vtkTrackballPan, vtkTrackballZoom],
    # Ctrl + Left, Ctrl + Middle, Ctrl + Right
    [vtkTrackballEnvironmentRotate, vtkTrackballRoll, vtkTrackballZoomToMouse],
    # Shift + Left, Shift + Middle, Shift + Right
    [vtkTableTopRotate, vtkTrackballRoll, vtkTrackballMultiRotate],
    # Alt + Left, Alt + Middle, Alt + Right
    [vtkJoystickFlyIn, vtkJoystickFlyOut, vtkTrackballMultiRotate],
]
buttons = [vtkCameraManipulator.MouseButtonType.Left, vtkCameraManipulator.MouseButtonType.Middle, vtkCameraManipulator.MouseButtonType.Right]
ctrl_modifier = [False, False, True]
shift_modifier = [False, True, False]

style_manip = vtk.vtkInteractorStyleManipulator()
for row_id, row in enumerate(manipulator_classes):
    for column_id, manipulator_class in enumerate(row):
        style_manip.AddManipulator(
            manipulator_class(mouse_button=buttons[column_id], 
                              control=ctrl_modifier[row_id],
                              shift=shift_modifier[row_id],
                            )
                        )
interactor = vtk.vtkRenderWindowInteractor(interactor_style=style_manip)
interactor.SetInteractorStyle(style_manip)