feat(x11): Add Window::drag_resize_window (#2515)

src/platform_impl/windows/window.rs

@@ -72,8 +72,8 @@ use crate::{
         Fullscreen, PlatformSpecificWindowBuilderAttributes, WindowId,
     },
     window::{
-        CursorGrabMode, CursorIcon, Theme, UserAttentionType, WindowAttributes, WindowButtons,
-        WindowLevel,
+        CursorGrabMode, CursorIcon, ResizeDirection, Theme, UserAttentionType, WindowAttributes,
+        WindowButtons, WindowLevel,
     },
 };
 
@@ -432,6 +432,11 @@ impl Window {
         Ok(())
     }
 
+    #[inline]
+    pub fn drag_resize_window(&self, _direction: ResizeDirection) -> Result<(), ExternalError> {
+        Err(ExternalError::NotSupported(NotSupportedError::new()))
+    }
+
     #[inline]
     pub fn set_cursor_hittest(&self, hittest: bool) -> Result<(), ExternalError> {
         let window = self.window.clone();