[transfer-hook] Remove clap deprecated functions

[samkim-crypto]

Problem

The transfer hook cli tool still uses some deprecated functions from clap-v2.

Summary

Updated the deprecated functions from clap-v2. Most of the changes should be straightforward:

• Replaced Arg::with_name to Arg::new, which is functionally identical
• Replaced Arg::multiple with ArgAction::Append, which should be functionally identical
• Replaced is_present with try_contains_id. The old is_present panics if the arg is not previously known/defined while try_contains_id gives an error. Otherwise, the two functions are identical.

The only non-trivial change would be replacing value_of. This should technically be updated to try_get_one::<T>(...) or get_one::<T>(...), but I replaced it with a convenience function try_get_signer, which was added with solana-clap-v3-utils 2.0. I ended up removing the use of DefaultSigner and just added logic to parse signers directly.

I also used SignerSource::try_get_pubkey to remove some verbose parsing code (from #6625).

The feature deprecated in clap v3 allows us to toggle warnings from the use of deprecated functions. The deprecated functions are all removed from this crate, but the other crates in the repo still uses some deprecated functions, so I removed this feature from clap for now.

[buffalojoec]

Looks good!