Changes to Create or update one model pricing override

added the new optional request property pricing/cache_write_1h_per_mtok

added the optional property pricing/cache_write_1h_per_mtok to the response with the 200 status

added the new optional request property pricing/output_image_per_mtok

added the optional property pricing/output_image_per_mtok to the response with the 200 status

added the new internal_error enum value to the type response property for the response status 400

added the new internal_error enum value to the type response property for the response status 401

added the new internal_error enum value to the type response property for the response status 500

added the new internal_error enum value to the type response property for the response status 502

added the new internal_error enum value to the type response property for the response status 503

added the new permission_error enum value to the type response property for the response status 400

added the new permission_error enum value to the type response property for the response status 401

added the new permission_error enum value to the type response property for the response status 500

added the new permission_error enum value to the type response property for the response status 502

added the new permission_error enum value to the type response property for the response status 503

endpoint added