The list of redirection should be maintained in a command line tool, what can:
- Manipulate YAML config file. Where the redirection list peristently stored.
- Implement append to the list: urlshorten configure -a dogs -u www.dogs.com
- Implement remove from the list: urlshorten -d dogs
- List redirections: urlshorten -l
- Run HTTP server on a given port: urlshorten run -p 8080
- Prints usage info: urlshorten -h