If functor returns track state, then tuple all the associated info (location, statevector, covariance, z location)
Adds support in FunTuple for :
- SVector<T, N> particularly for N=5,6,7,8
- LHCb::State: Location (flag int), statevector (px, py, x/z, y/z, q/p), 5x5 covariance and z location.
Closes: DaVinci#128 (closed)
FYI: @ldufour