NewAssignmentsManager creates a new AssignmentManager, which will communicate with the TAS service.

MachineIdParameterName is the name of the parameter used to identify the version of azd in the assignment request.

MachineIdParameterName is the name of the parameter used to identify the machine ID in the assignment request.

Assignment is a subset of the information returned by the TAS service.

AssignmentConfig is information about a specific config in an assignment.

AssignmentsManager manages interaction with the Assignments service, caching the results for 24 hours.