feat(loading-states): add and remove attributes during loading (i.e a data-loading-class-remove and data-loading-class for attributes)

[W1M0R]

I have the following code that hides and reveals a loading dialog/modal dynamically based on the loading state:

	<span data-loading data-loading-delay="500">
		<dialog open class="modal glass">
			<div>
				<p>
					Task in progress. Please wait...
				</p>
				<progress class="progress w-56"></progress>
			</div>
		</dialog>
	</span>

That appears to work on the surface, but due to how some browsers/frameworks interpret the dialog's open attribute, this causes undesired behaviour when the dialog is open but hidden.

Ideally, I would like to be able to add the open attribute dynamically based on the loading state, for example:

	<span data-loading data-loading-delay="500">
		<dialog class="modal glass" data-loading-attribute="open">
			<div>
				<p>
					Task in progress. Please wait...
				</p>
				<progress class="progress w-56"></progress>
			</div>
		</dialog>
	</span>

Notice the data-loading-attribute attribute. The loading-states extension could look at that attribute, and use it to dynamically add and remove the open attribute.

@marisst @1cg Is this something that makes sense to add? I'll think of other alternatives to dynamically add/remove the open attribute without needing to make changes to the loading-states extension. I may need to rethink how I am doing this.

Here is another extension that can dynamically change attributes, but it is not linked to the loading states: https://github.com/jamcole/htmx-ext-attribute-tools/blob/main/README.md

I ended up resolving my particular issue by avoiding the open attribute and using functionality exposed by daisyui:

	<dialog data-loading="grid" data-loading-delay="500" data-loading-class="modal modal-open modal-middle glass">
		<div>
			<p>
				Task in progress. Please wait...
			</p>
			<progress class="progress w-56"></progress>
		</div>
	</dialog>

However, having the ability to dynamically add/remove attributes based on loading states would still be useful.