[Feature Request]: Ability to make event_loop async to satisfy WGPU on WASM in Resumed Event

I would like to request the ability to .await code within the event loop, such as inside the Resumed event. This'll allow initializing libraries such as WGPU which require async code to be ran on platforms without thread blocking such as WASM. Right now the only way to run async functions without blocking is to do it outside of the event loop and to keep asyncing everything up to the original function that the program starts at (with wasm_bindgen)

I'm trying to support 3 platforms. The platforms are Desktop, Android, and Web Browser. I have the first two platforms down which both wait for the Resumed event to be called before creating the window. This is the only thing preventing me from supporting the web browser

Start by reading winit's event-loop and Resumed-event APIs, then compare how the Desktop, Android, and Web Browser paths handle initialization. Define how async work could be awaited in Resumed without blocking WASM, and verify that the resulting approach supports the three platforms described in the issue.