Changes to Create live session

request property data/items/data/estimatedEventDurationInMinutes list-of-types was narrowed by removing types number from media type application/json

the data/items/data/estimatedEventDurationInMinutes request property's max was set to 360.00

the data/items/data/estimatedEventDurationInMinutes request property's min was set to 1.00

added the new optional request property data/items/data/shouldSkipJoinScreenForStudents