feat(new_editor): wire project, inspector, and viewport runtime

new_editor/app/Internal/StringEncoding.h

@@ -7,6 +7,38 @@
 
 namespace XCEngine::UI::Editor::App::Internal {
 
+inline std::wstring Utf8ToWide(std::string_view text) {
+    if (text.empty()) {
+        return {};
+    }
+
+    const int requiredChars = MultiByteToWideChar(
+        CP_UTF8,
+        0,
+        text.data(),
+        static_cast<int>(text.size()),
+        nullptr,
+        0);
+    if (requiredChars <= 0) {
+        return {};
+    }
+
+    std::wstring wide(static_cast<std::size_t>(requiredChars), L'\0');
+    const int convertedChars = MultiByteToWideChar(
+        CP_UTF8,
+        0,
+        text.data(),
+        static_cast<int>(text.size()),
+        wide.data(),
+        requiredChars);
+    if (convertedChars <= 0) {
+        return {};
+    }
+
+    wide.resize(static_cast<std::size_t>(convertedChars));
+    return wide;
+}
+
 inline std::string WideToUtf8(std::wstring_view text) {
     if (text.empty()) {
         return {};