Create the post method for driverAvailabilityController as well as tests
[x] There is an API endpoint POST /api/driverAvailability/new for creating a new driver availability submission with the current user as the requester, given that the user has ROLE_DRIVER.
Create the post method for driverAvailabilityController as well as tests
POST /api/driverAvailability/new
for creating a new driver availability submission with the current user as the requester, given that the user hasROLE_DRIVER
.close #41