Shortcut to show / hide controller lanes

Please add a shortcut for showing / hiding the controller lane in the PRV. Furthermore, the treminology "automation lane" is used for controllers. However, the shortcut for showing and hiding automation lanes does not work here. So maybe it's worth a though renaming this to "controller lanes".

Additionally, it would be great to have the possibilty to create controller presets, e.g. saving a preset that shows CC1, CC11 and CC2 below each other and re-calling it via shortcuts.