using smart contract to confirm if a student attended an
online class struct for class with name date and vector of student structs student struct have name and their email struct have a lookup map of attendance class to have a uuid and a vector of attendees
fn to mutate - fn called register class and registering students
attendance function takes in the class uuid get the number of attendance and their details
guid
I add readme procedure of adding the bash script strat with build.sh for testing run test.sh to deploy on a dev