Add Raw Footage Requirement to Record Submitter

[stadust]

There's also some logic changes that need to happen to ensure that the server actually rejects submissions without raw footage. If you wanna make those changes yourself, here's a brief overview:

1. The following code currently checks whether the submission is a first submission by querying the database. That's no longer necessary, so this entire branch needs to be replaced with return Err(DemonlistError::RawRequiredForFirstTime) https://github.com/stadust/pointercrate/blob/bc5db82d9ca90f2e1d47a05e12e224f4a0270373/pointercrate-demonlist/src/record/post.rs#L154-L166
2. This enum variant should be renamed to something like RawRequired, and the accompanying format message has to be changed (since that message is the error message the user will be see) https://github.com/stadust/pointercrate/blob/bc5db82d9ca90f2e1d47a05e12e224f4a0270373/pointercrate-demonlist/src/error.rs#L181-L185

Thanks!