chore: add pgcli on readme

Author: sunng87

README.md

@@ -23,6 +23,7 @@ project.
   - Built-in `pg_catalog` tables
   - Built-in postgres functions for common meta queries
     - [x] DBeaver compatibility
+    - [x] pgcli compatibility
 - `datafusion-postgres-cli`: A cli tool starts a postgres compatible server for
   datafusion supported file formats, just like python's `SimpleHTTPServer`.
 - `arrow-pg`: A data type mapping, encoding/decoding library for arrow and