Refactor new_editor window architecture and routing

new_editor/app/System/SystemInteractionService.h

@@ -0,0 +1,18 @@
+#pragma once
+
+#include <filesystem>
+#include <string_view>
+
+namespace XCEngine::UI::Editor::System {
+
+class SystemInteractionService {
+public:
+    virtual ~SystemInteractionService() = default;
+
+    virtual bool CopyTextToClipboard(std::string_view text) = 0;
+    virtual bool RevealPathInFileBrowser(
+        const std::filesystem::path& path,
+        bool selectTarget) = 0;
+};
+
+} // namespace XCEngine::UI::Editor::System