fix: updates for using pg_textsearch for keyword search #31
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PR does:
Adds a migration for enabling theSplit off into feat: add migration for pg_textsearch #33 where that can be merged later once extension is generally available.pg_textsearchextension along with creating the necessary index ontimescale_chunks.content.to_bm25query)pg_textsearchwhere when an index is added to a table in non-default schema, then inserts will fail. The fix is to remove the index as we do the ingest into the temporary table, and then re-add it after we're done. This change should be removed in a follow-up PR though.By default the migration will be skipped as it can only be enabled in tiger cloud environments.