cli: Include recommended solana args by default and add new --max-retries

[Serdnad]

This PR includes the two following changes. They were closely related and small enough that 1 PR seemed reasonable, but happy to split them up if requested.

Updates anchor deploy and anchor upgrade to use default values for the following args, if not supplied:

• --with-compute-unit-price: defaults to the median unit price of recent successful transaction
• --max-sign-attempts: a somewhat arbitrary, but fairly practical value of 30
• --buffer: creates a new buffer keypair in the OS' default tmp directory on first use, and reuses that

Adds a new top-level, optional arg --max-retries to anchor upgrade, which will retry the upgrade with the same args. This is primarily useful for inconsistent issues like "Invalid Blockhash" or "N write transactions failed", which often just require another attempt.

[vercel]

@Serdnad is attempting to deploy a commit to the coral-xyz Team on Vercel.

A member of the Team first needs to authorize it.

[Serdnad]

Any other flags we should include by default? --use-quic maybe? And separately, would it make sense to also add --max-retries to anchor deploy?

[acheroncrypto]

Any other flags we should include by default? --use-quic maybe? And separately, would it make sense to also add --max-retries to anchor deploy

Afaik --use-rpc is more consistent but also depends on the RPC provider. I think increasing maximum retries makes sense though (changing the max sign attempts to 30 like you've done should take care of it).

[acheroncrypto]

Looks great other than the small clippy errors in CI.

Before we merge, could you also note this feature in the CHANGELOG?

[Serdnad]

Sorry for the wait, fixed the clippy lints and updated the changelog

[acheroncrypto]

Thank you!