Add facet field for year of `fuzzyDate` UDFs

[ajolipa]

Currently there's no way to facet on a fuzzy date UDF. It should be possible to add a <uuid>.year_facet field to the Typesense index as we currently do for event models. (https://github.com/performant-software/core-data-connector/blob/b62123bc066b4cd9e6[…]3b810066122779/app/services/core_data_connector/search/event.rb)