Fix NPE when registering gesture support

Car implementation does no support gestures thus this installs a null
object pattern version of the gesture plug in.
This is a temp solution while the class hierarchy is being refactored.

Bug: 72094006

Test: deploy and check
Change-Id: I7cbca3d77546d62e3e78d8c73faa8ef5cd8803f0
1 file changed