feat(domain-and-input-skeleton): step 0 — semantic-domain-and-origin-types

include/fesa/model/entity_set.hpp

@@ -0,0 +1,20 @@
+#pragma once
+
+#include <string>
+#include <vector>
+
+#include <fesa/model/ids.hpp>
+
+namespace fesa {
+
+struct NodeSet final {
+    std::string name;
+    std::vector<NodeId> members;
+};
+
+struct ElementSet final {
+    std::string name;
+    std::vector<ElementId> members;
+};
+
+}  // namespace fesa