EarthWorks production:adding synonyms and synonym handling

[hudajkhan]

Mirrors #341 in production.
Relates to sul-dlss/earthworks#1083 and sul-dlss/earthworks#1240 .
Addresses sul-dlss/earthworks#1110 .

What this pull request does:

• Adds synonyms file with additional synonyms.
• Solr schema file: Use "SynonymGraphFilterFactory" to handle synonyms. This factory handles multi-word synonyms.

References:

• See: https://solr.apache.org/guide/solr/latest/indexing-guide/filters.html#synonym-graph-filter which states "This filter is a replacement for the Synonym Filter, which produces incorrect graphs for multi-token synonyms."
• See https://lucidworks.com/post/multi-word-synonyms-solr-adds-query-time-support/ . Note the three steps: Using SynonymGraphFilterFactory in the query analyzer, setting sow (i.e. split on whitespace) to false (this setting appears to be set to false by default in current/recent Solr versions), and setting expand to true. Two of these were already in place for our Solr configuration.