Add missing reserved CloudKit keywords

[stephencelis]

We missed a couple.

[larryonoff]

@stephencelis perhaps it would be beneficial to implement validation of reserved keyword use during SyncEngine initialization in Debug mode?

[stephencelis]

@larryonoff We'd definitely be down for a PR on this. It's a nice-to-have but not something we're able to prioritize ourselves right now.

[larryonoff]

@larryonoff We'd definitely be down for a PR on this. It's a nice-to-have but not something we're able to prioritize ourselves right now.

thanks! makes sense.

[stephencelis]

@larryonoff If you end up tackling it let us know if you have any questions!

[larryonoff]

@stephencelis I’m happy to help, but I’m don't have time yet. By the way, do you think we should validate it at initialization or when the SyncEngine starts? Should it happen using IssueReporting reportIssue?

[stephencelis]

@larryonoff I think you could add it as a throwing failure to this method (called from the initializer):

sqlite-data/Sources/SQLiteData/CloudKit/SyncEngine.swift

Line 2026 in c6a17b9

fileprivate func validateSchema() throws {