Add `FilteredWorld(Mut)`

## What problem does this solve or what need does it fill?

We have `FilteredResources`, `FilteredEntity(Ref/Mut)` to split access.

## What solution would you like?

It would be nice to have a similar functionality for `&World` that works in a similar way. `FilteredWorld(Mut)` would deny access to resources or components that was filtered out.

## Additional context

It would reduce a lot of `resource_scope` in [my code](https://github.com/projectharmonia/bevy_replicon/blob/master/src/client.rs#L107) and potentially unlocked some "entities instead of resources" scenarios.

Start by reading the existing FilteredResources and FilteredEntity(Ref/Mut) implementations, then inspect the resource_scope usage in src/client.rs around line 107. Define how FilteredWorld(Mut) should deny filtered resources and components while supporting the proposed entity scenarios; done means the API behavior and scope are clear and covered by appropriate tests.

Written by the indexing model from the issue text.