Changes to Add a new API key

removed the required property data/items/data from the response with the 200 status

removed the required property data/items/request_id from the response with the 200 status

added the optional property data/items/api_key to the response with the 200 status

added the optional property data/items/archive_enabled to the response with the 200 status

added the optional property data/items/audit_email to the response with the 200 status

added the optional property data/items/bounce_notifications to the response with the 200 status

added the optional property data/items/click_tracking_enabled to the response with the 200 status

added the optional property data/items/custom_rate_limit to the response with the 200 status

added the optional property data/items/custom_ratelimit_period to the response with the 200 status

added the optional property data/items/custom_ratelimit_value to the response with the 200 status

added the optional property data/items/default_ratelimit_period to the response with the 200 status

added the optional property data/items/default_ratelimit_value to the response with the 200 status

added the optional property data/items/description to the response with the 200 status

added the optional property data/items/endpoints to the response with the 200 status

added the optional property data/items/feedback_enabled to the response with the 200 status

added the optional property data/items/feedback_html to the response with the 200 status

added the optional property data/items/feedback_text to the response with the 200 status

added the optional property data/items/ippool to the response with the 200 status

added the optional property data/items/open_tracking_enabled to the response with the 200 status

added the optional property data/items/sending_status to the response with the 200 status

added the optional property data/items/status to the response with the 200 status

added the optional property data/items/username to the response with the 200 status