feat: add analysis model objects

include/fesa/boundary/BoundaryCondition.hpp

@@ -0,0 +1,16 @@
+#pragma once
+
+namespace fesa::boundary {
+
+enum class BoundaryConditionKind {
+    SinglePointConstraint
+};
+
+class BoundaryCondition {
+public:
+    virtual ~BoundaryCondition() = default;
+
+    virtual BoundaryConditionKind kind() const noexcept = 0;
+};
+
+} // namespace fesa::boundary