Changes to Create Redpanda Connect pipeline

added the new optional request property egress

added the optional property egress to the response with the 201 status

added the new STATE_DRAFT enum value to the state response property for the response status 201

added the new optional request property draft

added the optional property create_time to the response with the 201 status

added the optional property created_by to the response with the 201 status

added the optional property update_time to the response with the 201 status

added the new optional request property service_account

added the optional property service_account to the response with the 201 status

api tag Redpanda Connect Pipelines added

api tag Redpanda Connect Pipeline removed

removed the request property service_account

removed the optional property service_account from the response with the 201 status

api tag Redpanda Connect Pipeline added

api tag Redpanda Connect Pipelines removed

added the new optional request property tags

endpoint added