sabre-io
Add `beforePropertyResolution` event
Description
This PR introduces a new beforePropertyResolution event, to allow Plugins to slice and filter the paths for which properties are loaded during an HTTP PROPFIND request, in a similar manner as done for the beforeMultiStatus event.
Use-case
This allows the implementation of a more efficient pagination, than what is currently possible by the use of beforeMultiStatus. The current mechanism scans the whole tree under a path (according to the depth parameter) and loads properties for the nodes found, resulting in a slow initial request and requiring storing the rendered XML into a cache.
It should be possible to "discover" the nodes for a PROPFIND request, store the list for paging, slice the list of propfinds and have Sabre return the properties for those nodes only.
