feat: register validated thermal shell kernels

src/fesa/CMakeLists.txt

@@ -17,6 +17,7 @@ add_library(
     analysis/nonlinear_static_control.cpp
     analysis/nonlinear_static_procedure.cpp
     analysis/prepared_analysis.cpp
+    analysis/thermal_time_grid.cpp
     app/fesa_application.cpp
     app/output_paths.cpp
     assembly/load_assembler.cpp
@@ -35,6 +36,8 @@ add_library(
     elements/mitc4_shell.cpp
     elements/nonlinear_mitc4_shell.cpp
     elements/nonlinear_mitc4_inertia.cpp
+    elements/thermal_shell.cpp
+    elements/thermal_shell_geometry.cpp
     fem/dof_manager.cpp
     io/abaqus/domain_builder.cpp
     io/abaqus/domain_mapping_context.cpp