Refactor editor host resource boundary

editor/app/Host/Win32/Resources/Win32EditorResourceService.h

@@ -0,0 +1,27 @@
+#pragma once
+
+#ifndef NOMINMAX
+#define NOMINMAX
+#endif
+
+#include "EditorHostResourceService.h"
+
+#include <windows.h>
+
+namespace XCEngine::UI::Editor::Host {
+
+class Win32EditorResourceService final : public EditorHostResourceService {
+public:
+    explicit Win32EditorResourceService(HINSTANCE instance);
+
+    bool TryLoadPngResource(
+        EditorHostPngResourceKind kind,
+        EditorHostResourceBytes& outBytes,
+        std::string& outError) const override;
+    std::filesystem::path GetExecutableDirectory() const override;
+
+private:
+    HINSTANCE m_instance = nullptr;
+};
+
+} // namespace XCEngine::UI::Editor::Host