[DOC]: Postgres to Typesense migration for Full-Text Search

[Nikhiladiga]

Change Summary

• Adds a documentation page comparing PostgreSQL search capabilities with Typesense.
• The guide explains how to implement full-text search, typo tolerance, prefix search, autocomplete, ranking, highlighting, and faceting in PostgreSQL, compares the equivalent implementation in Typesense

PR Checklist

• I have read and signed the Contributor License Agreement.