(Unique/Static) Usernames

[MrRacoon]

The team would like to have Unique usernames for each rider and have some static riders inserted into the database.

Unique names can be achieved with (ap/pre)pending rider_id's to names

Static people can be generated using the initialization procedure.

Also, It was mentioned that reversing the signup procedures input outputs could make more sense. Instead of receiving a rider_id and creating a random name entry, take a name and create a rider with a unique number and return it.

[MrRacoon]

Procedures have been added for the creation of riders in a more controlled manner. You can either sign up riders by giving the id, the name, or nothing, and recieve the rider_id back as a result.