Introduce an interface to obtain scheduler configuration & state (@graven)

• decouple HLTControlFlowMgr and ExecutionReportsWriter, i.e. no longer force the latter to include the definition of the former
• required for HltGenConfig to query the data & control flow graph generated by HLTControlFlowMgr

cherry picked from !3104 (8a4b8df0)

needed for !3240 (merged) and related MRs

Hlt/HLTScheduler/src/ControlFlowNode.h

@@ -10,8 +10,15 @@
 \*****************************************************************************/
 // @author Niklas Nolte, Katya Govorkova
 #pragma once
-
-// globals
+#include "CFNodeType.h"
+#include "GaudiAlg/FunctionalDetails.h"
+#include "GaudiKernel/Algorithm.h"
+#include "GaudiKernel/AppReturnCode.h"
+#include "GaudiKernel/FunctionalFilterDecision.h"
+#include "GaudiKernel/MsgStream.h"
+#include "Kernel/Chrono.h"
+#include "Kernel/ISchedulerConfiguration.h"
+#include "Kernel/STLExtensions.h"
 #include <algorithm>
 #include <cstdlib>
 #include <fstream>
@@ -27,28 +34,8 @@
 #include <variant>
 #include <vector>
 
-// locals
-#include "CFNodeType.h"
-
-// GaudiCore
-#include "GaudiAlg/FunctionalDetails.h"
-#include "GaudiKernel/Algorithm.h"
-#include "GaudiKernel/AppReturnCode.h"
-#include "GaudiKernel/FunctionalFilterDecision.h"
-#include "GaudiKernel/MsgStream.h"
-
-#include "Kernel/Chrono.h"
-#include "Kernel/STLExtensions.h"
-
-struct NodeState {
-  uint16_t executionCtr;
-  bool     passed;
-};
-
-struct AlgState {
-  bool isExecuted;
-  bool filterPassed;
-};
+using NodeState = LHCb::Interfaces::ISchedulerConfiguration::State::NodeState;
+using AlgState  = LHCb::Interfaces::ISchedulerConfiguration::State::AlgState;
 
 struct AlgWrapper {
   using Algorithm = Gaudi::Algorithm;