Feature Suggestion: Set window size to be different from stage size on launch

[gomiigg]

The stage size feature in the packager only sets the size of the stage, but not the size of the packaged window.
Let's say I have a 640x360 (widescreen) project that I want packaged. The stage size is too small to also functionally serve as the window size, so I type 1280x720 (twice as large). However, this only sets the stage size to be 1280x720 and the window still stays at the small default size.

I'm thinking a workaround with Window Controls is possible, but will only resize the window AFTER loading and launching the project.
Could this be solved using Custom CSS?

[TheShovel]

this can be done with this extension
https://extensions.turbowarp.org/CubesterYT/WindowControls.js

[gomiigg]

this can be done with this extension

https://extensions.turbowarp.org/CubesterYT/WindowControls.js

Yes, but as stated in my
Issue the Window Controls extension can only be run once the project starts. I might be nitpicking, but it would look weird if the window was in one resolution when loading and then popped to another once loaded. I want the window to be set to a resolution once created (before the loading screen)