add hand.py/hand.ino used to create this VR glove, using MuJoCo Haptix MPL hand (Apache 2 license)

https://www.youtube.com/watch?v=VMJyZtHQL50
added b3InitSyncBodyInfoCommand, to retrieve body info, when connecting to a server with existing bodies
pybullet will call this b3InitSyncBodyInfoCommand automatically after connecting
Avoid overriding the py.setVRCameraState setting in VR

examples/pybullet/vrEvent.py

@@ -7,6 +7,7 @@ import pybullet as p
 
 CONTROLLER_ID = 0
 POSITION=1
+ORIENTATION=2
 BUTTONS=6
 
 #assume that the VR physics server is already started before