Add usage examples of MySQLDAO calls to setup.md

[silrenan]

Update the setup.md documentation to include practical examples demonstrating how to use the MySQLDAO class and its main methods. This will help developers understand how to interact with the database layer and perform common operations. Include code snippets for typical use cases such as creating, reading, updating, and deleting records using MySQLDAO as well as respective responses.

[silrenan]

waiting #42 to be merged to sharingan the style.