Add Initial Objects

[JonahCWilson]

Initial class definitions for some of the objects in the OverDrive Indexer.

What I've learned:

VAR is used for values that are mutable and can be reassigned.
VAL is used for Immutable Values which are only assigned once.

I'm writing most of this by hand rather than have AI generate it, as that's how you learn, but I have been attempting to do it is the most "Kotlin-ish" way possible. E.g. while it's entirely possible to write getters and settings for every property, you normally shouldn't unless there's specific logic you need (see the id field in OverDriveRecordInfo)

The OverDriveAPIConnection was the start of a thought process, we should move that logic into its own class and isolate it. I think we can also write some logic to separate out the interspersed PreparedStatements.

[lathomas64]

Makes sense to me. Like the logic behind the API connection class. If for no other reason then making it easier if we have to move to a v2 api in the future being able to change the version in one place instead of several.