Add modular parquet de-/encryption

[brainslush]

Description

Currently there are efforts to implement parquet de-/encryption into arrow-rs:
apache/arrow-rs#6637

I suggest to extend the existing scan,read,sink and write interfaces to handle encrypted parquet.

I offer to implement it.

[coastalwhite]

I quite agree with most of what is being said in the arrow-r/s thread:

• We are interested but unless someone steps up to drive this effort resource or time-wise, I am not sure we have the bandwidth at the moment.
• Any implementation of this should use one of the pure Rut cryptography efforts (ring or RustCrypto).
• I am not 100% aware of the standard surrounding this, but I think this should be a relatively transparent step, maybe in PageReader or just above.

If you want to take this up, I suggest you first made a PR with a rough draft.

[rok]

Glad to see this!
apache/arrow-rs#6637 will most likely be ring based. I'd be happy to help with reviews etc.