Add pgxcli to Database Tools section

Author: Balaji01-4D

README.md

@@ -843,6 +843,7 @@ _Data stores with expiring records, in-memory distributed data stores, or in-mem
 - [onedump](https://github.com/liweiyi88/onedump) - Database backup from different drivers to different destinations with one command and configuration.
 - [pg_timetable](https://github.com/cybertec-postgresql/pg_timetable) - Advanced scheduling for PostgreSQL.
 - [pgweb](https://github.com/sosedoff/pgweb) - Web-based PostgreSQL database browser.
+- [pgxcli](https://github.com/Balaji01-4D/pgxcli) - PostgreSQL CLI client written in Go, inspired by pgcli.
 - [prep](https://github.com/hexdigest/prep) - Use prepared SQL statements without changing your code.
 - [pREST](https://github.com/prest/prest) - Simplify and accelerate development, ⚡ instant, realtime, high-performance on any Postgres application, existing or new.
 - [rdb](https://github.com/HDT3213/rdb) - Redis RDB file parser for secondary development and memory analysis.