PluginBase: add is_constructible constraint

examples/PluginBase.h

@@ -19,6 +19,7 @@
 
 #include "ae108/assembly/Assembler.h"
 #include "ae108/elements/ElementConcept.h"
+#include <type_traits>
 namespace ae108::assembly {
 
 template <typename Mesh, ElementConcept Element> class AnnotatedElement {
@@ -63,7 +64,8 @@ public:
 
   using ElementView = typename cpppetsc::LocalElementView<Mesh>;
   template <class... Args>
-  void emplaceElement(ElementView view, Args &&...constructorArguments) {
+  requires(std::is_constructible_v<Element, Args...>) void emplaceElement(
+      ElementView view, Args &&...constructorArguments) {
     _elements.emplace_back(std::move(view),
                            std::forward<Args>(constructorArguments)...);
   }