Changes to Cited subreddits

added the new optional query request parameter search

added the optional property code to the response with the 400 status

added the optional property code to the response with the 404 status

added the optional property code to the response with the 500 status

added the optional property message to the response with the 400 status

added the optional property message to the response with the 404 status

added the optional property message to the response with the 500 status

added the optional property reference to the response with the 400 status

added the optional property reference to the response with the 404 status

added the optional property reference to the response with the 500 status

added the optional property success to the response with the 400 status

added the optional property success to the response with the 404 status

added the optional property success to the response with the 500 status

for the query request parameter days, default value 30 was added

for the query request parameter days, the min was set to 1.00

added the success response with the status 200

endpoint added