Add remaining Doctrine Entities

[RobMasters]

Currently only the User and Team entities are configured (although not complete).

We will need:

Race (table: races)

• id
• date
• track_id

  Track (table: tracks)

• id
• name

  Result (table: results)

• _raceid
• _userid
• position
• character_id

  Character (table: characters)

• id
• name

Any others? Changes?