Get database types in sync

[Jipperism]

@bitbeckers on discord

From top of my head:

• All data database tables follow the wrong types for timestamps, chainIds and possible other numbers
• Timestamps should be Unix seconds as bigint, matching what is on-chain.
• ChainIds should be big int matching what is on chain
• Any number, like hypercert ID parts, that could be a bigint (because on-chain) should be a big int
• There's a hypercerts table in the data database but those aren't the actual hypercerts but only pointers, so should be at least something like hypercertIds. It became very confusing at multiple points during the refactor
• Instead of performing complex joins to get the state of the hyperboard or collection, I propose to add views for hyperboards and collections
• Iirc, we mostly use UUIDs as IDs but for some reason hyperboards/collections have numbers