feat(resources): add LoadGroup and UnloadGroup for batch resource loading

engine/include/XCEngine/Resources/ResourceManager.h

@@ -85,6 +85,23 @@ public:
     
     Containers::String ResolvePath(const Containers::String& relativePath) const;
 
+    template<typename T>
+    void LoadGroup(const Containers::Array<Containers::String>& paths, 
+                   std::function<void(ResourceHandle<T>)> callback) {
+        for (const auto& path : paths) {
+            LoadAsync(path, GetResourceType<T>(), [callback](LoadResult result) {
+                if (result && result.resource) {
+                    callback(ResourceHandle<T>(static_cast<T*>(result.resource)));
+                } else {
+                    callback(ResourceHandle<T>());
+                }
+            });
+        }
+    }
+
+    Containers::Array<Containers::String> GetResourcePaths() const;
+    void UnloadGroup(const Containers::Array<ResourceGUID>& guids);
+
 private:
     ResourceManager() = default;
     ~ResourceManager() = default;

engine/include/XCEngine/Resources/Resources.h

@@ -8,6 +8,7 @@
 #include "IResourceLoader.h"
 #include "ResourceCache.h"
 #include "AsyncLoader.h"
+#include "ResourceDependencyGraph.h"
 
 #include "Texture.h"
 #include "TextureLoader.h"
@@ -22,6 +23,7 @@
 
 #include "ResourceFileSystem.h"
 #include "FileArchive.h"
+#include "ResourcePackage.h"
 
 // Forward declarations for concrete resource types
 namespace XCEngine {