[Documentation Request] Rewrite 'wesql' Test Cases Using New End-to-End Test Framework

[earayu]

Background

The 'wesql' test cases need to be revamped by utilizing the new End-to-End test framework for enhanced testing capabilities.

Proposal

Update the existing 'wesql' test cases by integrating them with the new End-to-End test framework to improve test coverage and efficiency. Access the test cases at: wescale/go/test/endtoend/wesql for reference.