Modeling - Refactor BRepClass and FaceClassifier Implementation (#1167)

- Migrated `TopClass_FaceClassifier` / `TopClass_Classifier2d` implementations to `.pxx` and updated BRepClass/Geom2dHatch wrappers to use them (removing `_0.cxx` generator glue).
- Updated BRep class helper headers to use header inlines instead of separate `.lxx` files, and added/rewired passive/face classifier implementations.
- Extended `NCollection_DynamicArray` / `NCollection_KDTree` APIs (insert helpers, callback-based range query) and added GTests for the new vector insert operations.

src/ModelingAlgorithms/TKTopAlgo/BRepClass/BRepClass_FaceExplorer.hxx

@@ -65,10 +65,10 @@ public:
   Standard_EXPORT void InitWires();
 
   //! Returns True if there is a current wire.
-  bool MoreWires() const;
+  bool MoreWires() const { return myWExplorer.More(); }
 
   //! Sets the explorer to the next wire.
-  void NextWire();
+  void NextWire() { myWExplorer.Next(); }
 
   //! Returns True if the wire bounding volume does not
   //! intersect the segment.
@@ -79,10 +79,10 @@ public:
   Standard_EXPORT void InitEdges();
 
   //! Returns True if there is a current edge.
-  bool MoreEdges() const;
+  bool MoreEdges() const { return myEExplorer.More(); }
 
   //! Sets the explorer to the next edge.
-  void NextEdge();
+  void NextEdge() { myEExplorer.Next(); }
 
   //! Returns True if the edge bounding volume does not
   //! intersect the segment.
@@ -127,6 +127,4 @@ private:
   double myVMax;
 };
 
-#include <BRepClass_FaceExplorer.lxx>
-
 #endif // _BRepClass_FaceExplorer_HeaderFile