Sculpt: Add orientation modes to the Cloth Filter

This adds the orientation modes to the Cloth Filter.
Similar to the mesh filter, they set the orientation of the axis when
limiting the forces.

When using the gravity mesh filter, the orientation also sets the gravity
direction. In world orientation, cloth will always fall towards the
ground plane. In view mode, cloth will always fall down relative to the
view.

Reviewed By: sergey

Differential Revision: https://developer.blender.org/D8618

release/scripts/startup/bl_ui/space_toolsystem_toolbar.py

@@ -1289,6 +1289,7 @@ class _defs_sculpt:
             layout.prop(props, "strength")
             row = layout.row(align=True)
             row.prop(props, "force_axis")
+            layout.prop(props, "orientation", expand=False)
             layout.prop(props, "cloth_mass")
             layout.prop(props, "cloth_damping")
             layout.prop(props, "use_face_sets")