[rhailrake]

Adds IClydeWindow.Maximize() and implements it for SDL3 through the window command queue. The headless implementation is a no-op.

[Aeshus]

I think this looks good, though I admittedly don't have much experience with our SDL/Clyde pieces.

Just one nitpick on the comment.

[Aeshus]

nitpick: Add a note here that this is asynchronous, as described in SDL3's docs.

https://wiki.libsdl.org/SDL3/SDL_MaximizeWindow

Suggested change

	/// <summary>
	/// Tell the OS to maximize this window.
	/// </summary>
	/// <remarks>
	/// This is not guaranteed to be respected, either by RT or by the OS.
	/// </remarks>
	void Maximize();
	/// <summary>
	/// Tell the OS to maximize this window.
	/// </summary>
	/// <remarks>
	/// This is not guaranteed to be respected, either by RT or by the OS.
	/// </remarks>
	/// <remarks>
	/// This may be asynchronous, meaning this function can return before
	/// it becomes maximized (if ever).
	/// </remarks>
	void Maximize();