extension: pg_trgm

[zachblume]

support for similarity of text using trigram matching https://www.postgresql.org/docs/current/pgtrgm.html

Use case for me for pglite:

• Offloading work from the DB to instant read replicas living inside serverless functions
• pg_trgm is commonly used for string comparisons and provides the GIN and GIST index handling

[samwillis]

pg_trgm is supported in the current alpha/@next release, expected to go final in about a week.