[v8] Remove NodeCryptoProvider

[nicknisi]

Description

Now that we'll be supporting v18+ of Node, we no longer need the NodeCryptoProvider.

Note: At some point I re-introduced package-lock.json into this branch, so this PR also removes that.

Documentation

Does this require changes to the WorkOS Docs? E.g. the API Reference or code snippets need updates.

[ ] Yes

If yes, link a related docs PR and add a docs maintainer as a reviewer. Their approval is required.