Add post accounts state data to geyser transactions

[4r33x]

Problem

Subscribing to both transactions and accounts and then synchronizing their updates is a major pain when you need all the data. Not only is it difficult to implement correctly, but it also introduces excessive redundant allocations and increases system latency. This PR adds post-transaction account states to transaction notifications.

Summary of Changes

Added ReplicaTransactionInfoV3 with a new field post_accounts_states, which has the type:
Vec<(&Pubkey, TxnReplicaAccountInfo<'a>)>.

TxnReplicaAccountInfo<'a> contains account data without the pubkey field.

This data is passed from loaded_accounts: Vec<(Pubkey, AccountSharedData)>, which was previously just dropped after CommittedTransaction was created

Concerns

There should be no performance impact or additional allocations but I aimed to make minimal changes and follow the existing code style in geyser-plugin-interface. To achieve this, I avoided importing AccountSharedData into geyser-plugin-interface (because it adds new dependency to geyser-plugin-interface), leading to a single instance where an additional redundant allocation occurs:

    fn build_replica_transaction_info<'a>(
        index: usize,
        signature: &'a Signature,
        transaction_status_meta: &'a TransactionStatusMeta,
        transaction: &'a SanitizedTransaction,
        post_accounts_states: &'a [(Pubkey, AccountSharedData)],
    ) -> ReplicaTransactionInfoV3<'a> {
        ReplicaTransactionInfoV3 {
            index,
            signature,
            is_vote: transaction.is_simple_vote_transaction(),
            transaction,
            transaction_status_meta,
            post_accounts_states: post_accounts_states
                .iter()
                .map(|(pubkey, data)| {
                    (
                        pubkey.as_ref(),
                        Self::accountinfo_from_shared_account_data(data),
                    )
                })
                .collect(),
        }
    }

This additional allocation could be avoided by importing AccountSharedData and Pubkey into geyser-plugin-interface and changing post_accounts_states to use owned types.