Changes to Create image

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

added the new optional request property service_tier

added the new optional request property moderation

added the new max enum value to the request property quality

added the new xhigh enum value to the request property quality

the response property error/code became nullable for the status 400

the response property error/code became nullable for the status 401

the response property error/code became nullable for the status 402

the response property error/code became nullable for the status 403

the response property error/code became nullable for the status 404

the response property error/code became nullable for the status 410

the response property error/code became nullable for the status 429

the response property error/code became nullable for the status 500

the response property error/code became nullable for the status 502

the response property error/code became nullable for the status 503

the response property error/code became nullable for the status 504

added the non-success response with the status 408

added the non-success response with the status 413

added the non-success response with the status 415

added the non-success response with the status 529