Index argo facets starting "SW" with the same code used by SearchWorks for those facets

[ndushay]

Use stanford_mods code to index the Argo facets that are supposed to be akin to SearchWorks facets. There is an exemplar PR #993. I think a single PR for all the rest of the facets below is fine, but that's up to you.

The below is condensed from https://docs.google.com/spreadsheets/d/1s4gQcPEY_YPGrDOFXQQ1IbRYBc3AaKGRIPW1FFw46G0/, where I traced Argo and SearchWorks for catalog config information for Solr facet field names and then chased indexing code in searchworks_traject_indexer to get to the methods used to populate the SearchWorks facet fields. See also the epic sul-dlss/argo#3168 for more info.

All SW facets:

• UI facet name | Argo Solr field | SW Solr field | stanford_mods method
• [ ] SW Resource type | sw_format_ssim | format_main_ssim | Stanford::Mods::Searchworks.format_main (PR #1005)
• [x] SW Date | sw_pub_date_facet_ssi | pub_year_tisim | Stanford::Mods::OriginInfo.pub_year_int (See PR #1008)
• [x] SW Topic | topic_ssim | topic_facet | Stanford::Mods::SearchworksSubjects.topic_facet (See PR #1009)
• [ ] SW Region | sw_subject_geographic_ssim | geographic_facet | Stanford::Mods::SearchworksSubjects.geographic_facet (PR #1010)
• [x] SW Era | sw_subject_temporal_ssim | era_facet | Stanford::Mods::SearchworksSubjects.era_facet (See PR #1011)
• [x] SW Genre | sw_genre_ssim | genre_ssim | Stanford::Mods::Searchworks.sw_genre (See PR #993)
• [x] SW Language | sw_language_ssim | language : sw_language_facet | Stanford::Mods::Searchworks.sw_language_facet (PR #1012)

[ndushay]

ACTION ITEM per discussion with @andrewjbtw @ndushay and @aaron-collier on 10/3/23: Aaron will write "report" tickets for sussing out the differences between stanford mods indexing and dor-indexing-app for this part of descriptive metadata.

[ndushay]

closing this ticket; there are some tendrils in PRs #1005 and #1010 and we will follow through for those tickets.