Added the Connector/j mysql driver as a dependency to the POM.xml file so, it doesn't need to be added as a dependency on new computers, it will be done automatically.

Refactored Schedule class to support local MySQL database. Now supports connecting to MySQL database.

Refactored Staff class to support local MySQL database. Now supports establishing connection to MySQL database, adding employees, removing employees, and printing all current employees.

1. Added java.sql to module-info.java. This the library required to communicate to the MySQL database.