V2: Administration Endpoints

[sylv256]

We need commands to manage the backend, so for now, these will be implemented via the authentication system.

• POST event/{event_slug}/create - Creates an event.
  • Requires an event name display_name, discord_role_id, minecraft_version, mod loader loader, registration_time, start_time, and end_time within an application/json body.
• POST event/{event}/modify - Modifies an event's properties.
  • Requires any above properties within an application/json body.
• POST db/eval - Evaluates an SQL expression and returns the result.
  • Requires an expression within an application/json body.