Unify fit node and fit result code in order to template TrackFitMatchMonitor

Jakub Kubatrequested to merge
jakub-UnifyNodesAndFitResults into master

Introduces:

  • free standing functions for TrackFitResult and PrKalmanFitResult that return range of either LHCb::FitNodeor PrFitNode
  • free standing functions for both types of fit nodes to retrieve predicted and filtered states in both directions
  • more methods for LHCb::FitNode and PrFitNode to have common interface

This is all done in order to be able to template any monitoring or alignment algorithm on the fit result and fit node type and thus reduce code duplication and ease maintenance.

TrackFitMatchMonitor is adapted to demonstrate.

Depends on !2603 (merged).

Edited by Jakub Kubat

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