feat: add analysis model objects

tests/material/material_base_test.cpp

@@ -0,0 +1,27 @@
+#include "fesa/material/LinearElasticMaterial.hpp"
+#include "fesa/material/Material.hpp"
+
+#include <memory>
+
+namespace {
+
+int require(bool condition) {
+    return condition ? 0 : 1;
+}
+
+} // namespace
+
+int run_material_base_tests() {
+    std::unique_ptr<fesa::material::Material> owned =
+        std::make_unique<fesa::material::LinearElasticMaterial>(700, 210.0, 0.3);
+    const fesa::material::Material& material = *owned;
+    const auto& elastic = static_cast<const fesa::material::LinearElasticMaterial&>(material);
+
+    if (const int result = require(material.id() == 700); result != 0) {
+        return result;
+    }
+    if (const int result = require(elastic.youngModulus() == 210.0); result != 0) {
+        return result;
+    }
+    return require(elastic.poissonRatio() == 0.3);
+}