open os file picker directly on pickfile in wasm

[JustFrederik]

When using pickfile it creates html code like this:

<div id="rfd-card"><input id="rfd-input" type="file" accept=""><button id="rfd-button">Ok</button></div>

Coud you add an option like set_overlay to AsyncFileDialog which lets you skip this rfd-card and open the os file picker directly? The easiest solution would probably be to add an eventlistener to input instead of button.set_onclick(Some(closure.as_ref().unchecked_ref())); in wasm.rs:94 and add the visibility of the body.

[JustFrederik]

https://github.com/JustFrederik/rfd

[jprochazk]

It seems like the FileSystem APIs are available on all browsers now: https://developer.mozilla.org/en-US/docs/Web/API/FileSystemHandle

But the APIs required to create handles to files on the user's machine (showDirectoryPicker, showOpenDirectoryPicker, showSaveFilePicker) are Chromium-only.
That being said, they are significantly simpler than the existing approach, and they do provide a much better experience, requiring no extra dialog to make them work. Maybe rfd could use those APIs if they are available, and fallback to the current implementation if not?