Add SSV2 models & collection

[Derpiesaurus]

This PR seems to have gone a little better. Apologies for the previous one I messed up!

[Derpiesaurus]

Not sure how to fix failed checks. I don't know if it's important to fix them in order to add the models, but I've not really got any idea what I'm doing here lol

[joeyballentine]

Have you set the repository up locally? You can just run the validate-db command and it'll fix it for you

[Derpiesaurus]

Uuuuh, that may have been what you meant? I do have it set up locally and just ran "npm run validate-db" and then also "npm run fix-db", and attempted to commit the same changes to the PR. Certainly didn't mean to close the pull request with that though haha

[joeyballentine]

Thanks!