Use unique_ptr to manage SDL pointers

src/utils/memory.cppm

@@ -0,0 +1,21 @@
+module;
+
+export module utils.memory;
+
+export namespace utils
+{
+    /**
+     * Template to generate deleters for `std::unique_ptr` from functions, e.g. to free SDL resources.
+     *
+     * @tparam delete_func Function that takes a pointer to a resource and deletes the resource.
+     */
+    template <auto delete_func>
+    struct FuncDeleter
+    {
+        template <typename T>
+        constexpr void operator()(T* ptr) const noexcept
+        {
+            delete_func(ptr);
+        }
+    };
+}