Default position for motors

Each joint in pib requires assembly at a specific degree so it can be reset to this degree as a default on startup. Additionally, this default is set in order to allow the joint to reach the maximum revolute joint limit on 180deg range servo motor.

Joint	Default position	Minimum angle limit	Maximum angle limit

Joint	Default position	Minimum angle limit	Maximum angle limit
"turn_head_motor"	0	-90	90
"tilt_forward_motor"	0	-25	90
"upper_arm_left_rotation"	0	-90	90
"elbow_left"	-45	-45	90
"lower_arm_left_rotation"	0	-90	90
"shoulder_vertical_left"	0	0	90
"shoulder_horizontal_left"	0	0	90
"upper_arm_right_rotation"	0	-90	90
"elbow_right"	-45	-45	90
"lower_arm_right_rotation"	0	-90	90
"shoulder_vertical_right"	0	0	90
"shoulder_horizontal_right"	0	0	90
"thumb_right_opposition"	-90	-90	90
"thumb_right_stretch"	-90	-90	90
"index_right_stretch"	-90	-90	90
"middle_right_stretch"	-90	-90	90
"ring_right_stretch"	-90	-90	90
"pinky_right_stretch"	-90	-90	90
"thumb_left_opposition"	-90	-90	90
"thumb_left_stretch"	-90	-90	90
"index_left_stretch"	-90	-90	90
"middle_left_stretch"	-90	-90	90
"ring_left_stretch"	-90	-90	90
"pinky_left_stretch"	-90	-90	90
"wrist_left"	0	-90	90
"wrist_right"	0	-90	90