Fix GCC build: add missing #include <memory> in IacaAggregator.hpp

MSVC transitively includes <memory> via other headers, masking the
missing include. GCC 11.4 requires it explicitly for std::shared_ptr.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/iaca/IacaAggregator.hpp

@@ -13,6 +13,7 @@
 #include <vector>
 #include <unordered_map>
 #include <functional>
+#include <memory>
 
 namespace eunex::iaca {