Changes to Get campaign subsequence

the response property sequences became optional for the status 200

the response property subsequence_schedule became optional for the status 200

added the optional property auto_variant_select to the response with the 200 status

added 'contains' constraint to the sequences/items/steps/items/variants response property for the status 200

removed the -1.00 enum value from the conditions/crm_status/items response property for the response status 200

removed the -2.00 enum value from the conditions/crm_status/items response property for the response status 200

removed the -3.00 enum value from the conditions/crm_status/items response property for the response status 200

removed the -4.00 enum value from the conditions/crm_status/items response property for the response status 200

removed the 0.00 enum value from the conditions/crm_status/items response property for the response status 200

removed the 1.00 enum value from the conditions/crm_status/items response property for the response status 200

removed the 2.00 enum value from the conditions/crm_status/items response property for the response status 200

removed the 3.00 enum value from the conditions/crm_status/items response property for the response status 200

removed the 4.00 enum value from the conditions/crm_status/items response property for the response status 200