Remove `solana-sdk` dependencies using the decoupled crates from anza

[leafaar]

The reason for that is that it will make it easier to use specific things, being more granular to update versions as well.
https://github.com/anza-xyz/solana-sdk

[leafaar]

You can assign me here, I would love to help if you think the issue makes sense.

[fanatid]

sounds good, thanks 👍