feat: add solver core skeleton

src/fesa/model/material.hpp

@@ -0,0 +1,32 @@
+#pragma once
+
+#include <fesa/core/ids.hpp>
+
+#include <string>
+#include <utility>
+
+namespace fesa::model {
+
+class Material {
+public:
+    Material(core::MaterialId id, std::string name)
+        : id_(id), name_(std::move(name))
+    {
+    }
+
+    core::MaterialId id() const
+    {
+        return id_;
+    }
+
+    const std::string& name() const
+    {
+        return name_;
+    }
+
+private:
+    core::MaterialId id_;
+    std::string name_;
+};
+
+} // namespace fesa::model