(fwRenderOgre): Update `MeshPickerInteractor` to send `PickingInfo` over signals

What does this MR do?

Send ::fwDataTools::PickingInfo with MeshPickerInteractorto be more generic.

How to test it?

• Launch OgreViewer
• Open a mesh
• Use CTRL+LeftClick to add a point
• Use CTRL+RightClick to remove a point

Associated Issues/Merge Requests

• Issues
  • Closes #321 (closed)