tsearch: support all token types in text search parser

[jordanlewis]

The default "text search parser" in Postgres supports many different token types, outlined here: https://www.postgresql.org/docs/current/textsearch-parsers.html

Our initial implementation will only support the ascii token type. This issue tracks enhancing the parser (see the TSParse function) to support the missing token types.

Part of #41288

Jira issue: CRDB-24808