Sign up,saving credentials in sql data base and login. Using Spring boot
set up of the mysql stuff is done like shown here: https://www.youtube.com/watch?v=aRLoSDOlU3w&list=PLrfOqXZlybt6Fs3NpKv-FIgM4Qn6bhYfJ&index=8&t=622s&ab_channel=CodeJava most of the code is taken from: https://www.javaguides.net/2018/10/user-registration-module-using-springboot-springmvc-springsecurity-hibernate5-thymeleaf-mysql.html