#88727

- Remove cyclic dependency between view descriptor collection and views service
- use view collection for getting and listening on views given a container
- return view descriptor colleciton always for a container

Add view-moving functionality to viewsservice which has been renamed to viewdescriptorservice. also includes outline view moving

Add view-moving functionality to viewsservice which has been renamed to viewdescriptorservice. also includes outline view moving

Part of #86686

So far, file editors have reported isDirty() === false when auto save was enabled e.g. to avoid showing dirty indicators. With the advent of custom editors, this needs to be cleaned up. The new method isSaving() serves as a hint that an editor can be dirty but in the process of being saved. As such, we can decide to hide the dirty indicator in that case. But in other cases we may want to know if the editor is dirty or not, even if auto saved.

A number of styles were missing from various locations due to the changes to support multiple icon labels in 8bb358f2

This change replaces all instances of the old class name .monaco-icon-label-description-container with the selector .monaco-icon-label-container > .monaco-icon-name-container

`.color` is no longer nullable. Use an empty string instead of null