Extend AsyncList capabilities

[darakreqo]

This PR improves the AsyncList component and adds a lot of basic features:

1. Items can now be updated directly by sending a ItemAction::Update action.
2. Lists can now be filtered with the new ListFilter trait.
3. Lists can now be sorted with the new ListSorter trait.
4. The UI reflects pending operation statuses.
5. Failed requests periodically auto-retry until success.

Improvements include:

1. The user of AsyncList can now decide how to display the list (Portal removed from AsyncList::view).
2. The list uses ListItem::Id instead of usize everywhere for more stability.
3. The editing status (Option<T::Id>) is now reset in Submit's handling instead of in ListMessage's.
4. A lot of refactoring and improvement to ergonomics.

TODOS

1. Add a way to customize the layout & editing flow of AsyncList::view with default ready-to-use models (this can probably be added in a future PR).

[darakreqo]

Now that the pending ListRequest::Create functionality has been added (2395248), we should generalize the idea of a pending operation to extend the functionality to other ListRequest variants as well.

[darakreqo]

Now that the pending operations have been generalized (c87157b), we should look into handling failure cases. In particular, the AsyncList should detect when it needs to sync itself and periodically try reconnecting when server connection is lost.

[darakreqo]

Also, filtering should happen before sorting for efficiency.

[darakreqo]

Also, filtering should happen before sorting for efficiency.

Really, filtering should happen mostly on the server because with very large lists, a fetch_all over HTTP would be laggy. Or at least, there should be a mix of the two (maybe with some caching), but this should really be implemented when most components are added and storage is generalized for the entire application.

[darakreqo]

ListFilter::filter should output a f32 score in addition to a bool so that it can be used in sorting.

[darakreqo]

Just apply those comments quickly and merge, we should move on.