Connect MITC4 drilling evidence across analysis procedures

include/fesa/elements/element.h

@@ -1,11 +1,14 @@
 #ifndef FESA_ELEMENTS_ELEMENT_H_
 #define FESA_ELEMENTS_ELEMENT_H_
 
+#include <array>
+#include <optional>
 #include <variant>
 #include <vector>
 
 #include "fesa/core/status.h"
 #include "fesa/elements/element_dof_layout.h"
+#include "fesa/elements/mitc4_drilling_mode.h"
 #include "fesa/math/matrix.h"
 #include "fesa/math/vector.h"
 #include "fesa/results/result_records.h"
@@ -30,6 +33,8 @@ struct BeamElementResultRows {
 struct ShellElementResultRows {
   std::vector<ShellResultRow> rows;
   double physical_strain_energy{0.0};
+  std::optional<Mitc4DrillingMode> drilling_mode;
+  std::array<double, 3> drilling_moment{};
 };
 
 /// @brief Selects the physical recovery shape of one runtime element.