fix windows window issues

src/types/nativeWindowChrome.ts

@@ -0,0 +1,7 @@
+export interface NativeWindowChromeAPI {
+  // Strips the visible native frame/shadow from a frameless WS_THICKFRAME window
+  // while preserving native snapping and edge resize. Returns false if the handle
+  // was invalid or the subclass could not be installed. Windows-only; a no-op
+  // elsewhere.
+  applyFlatFrame: (nativeWindowHandle: Buffer) => boolean
+}