Feat/lb api

[S1ro1]

Description

Basically only changes some api related stuff to support the leaderboard efforts, also adds submission id to the entry to have an easier way to retrieve it.

Very much nothing that scales well but gonna worry about that later.

Depends on #200, which needs to get merged + applied first, however shouldn't matter for release, as applying the changes in #200 can be done after merging to main.

Checklist

Before submitting this PR, ensure the following steps have been completed:

• Run the slash command /verifyruns on your own server.
  • Run the cluster bot on your server:

    python discord-bot.py

  • Start training runs with the slash command /verifyruns.
  • Verify that the bot eventually responds with:

    ✅ All runs completed successfully!
    

    (It may take a few minutes for all runs to finish. In particular, the GitHub
    runs may take a little longer. The Modal run is typically quick.)
    For more information on running a cluster bot on your own server, see
    README.md.