Test progress on IVA camera control
Added DiscreteAction for changing between Kerbals in IVA
Added PrecisionMode factor for pitch/yaw/roll

Added a PrecisionModeFactor to mod configuration. A dampening factor
between 0 and 1 which is applied to pitch, yaw and roll while in
PrecisionMode
Fixes for camera control in IVA

Camera control in IVA improved, still in experimental state