NewJTB Constructor function, returns blank JTBRequest to have json loaded into it.

NewResponse is a contstructor func to return a new response object.

RespondWithJSON Takes a responseWriter, status, message, and error code, and responds to the http call.

BucketName The google storage bucket that the AVSC files are stored in.

CredsFilePath Gets the file path for the key.json from the env.

JTBRequest Request object, represents the request that you parse to this service, validate:"required" tags mean the value has to be present in the body.

Response represents a basic http json response.