feat(assetto_corsa): add new eggs with server manager

[fluffy-kaiju]

Description

Assetto Corsa Dedicated Server with Asseto Server Manager web interface to manage the server.

Checklist for all submissions

• Have you followed the guidelines in our Contributing document?
• Have you checked to ensure there aren't other open Pull Requests for the same update/change?
• Have you tested and reviewed your changes with confidence that everything works?
• Did you branch your changes and PR from that branch and not from your master branch?
  • If not, why?: I've made a fork, if is require to make the change in a other branch I will make a new PR

• You verify that the start command applied does not use a shell script
  • If some script is needed then it is part of a current yolk or a PR to add one
• The egg was exported from the panel

New egg Submissions

1. Does your submission pass tests (server is connectable)?
2. Does your egg use a custom docker image?
   • Have you tried to use a generic image?
   • Did you PR the necessary changes to make it work?
3. Have you added the egg to the main README.md and any other README files in subdirectories of the egg (e.g /game_eggs) according to the alphabetical order?
4. Have you added a unique README.md for the egg you are adding according to the alphabetical order?
5. You verify that the start command applied does not use a shell script
   • If some script is needed then it is part of a current yolk or a PR to add one
6. The egg was exported from the panel

[fluffy-kaiju]

Hello, this is my first time submitting a PR for Pterodactyl eggs. If I've made any mistakes or if there's anything that needs improvement, please feel free to let me know! 😊

I'll continue working on when I have more time, busy week :/

Notes to my self

• Add on the README that Assetto Corsa Dedicated Server is free, so it's safer to use an alt account without 2FA
  • https://steamdb.info/app/302550/info/
• Add var to enable/disable monitoring (telemetry/prometheus endpoint)