try to automatically find shared data dirs in system-wide paths

Signed-off-by: Nicola Murino <nicola.murino@gmail.com>

vfs/sys_windows.go

@@ -9,3 +9,10 @@ import (
 func isCrossDeviceError(err error) bool {
 	return errors.Is(err, windows.ERROR_NOT_SAME_DEVICE)
 }
+
+func isInvalidNameError(err error) bool {
+	if err == nil {
+		return false
+	}
+	return errors.Is(err, windows.ERROR_INVALID_NAME)
+}