Add get_signature_status() to SyncClient

And move bank::Result to transaction module.

core/src/blocktree_processor.rs

@@ -4,11 +4,12 @@ use crate::entry::{Entry, EntrySlice};
 use crate::leader_schedule_utils;
 use rayon::prelude::*;
 use solana_metrics::counter::Counter;
-use solana_runtime::bank::{Bank, Result};
+use solana_runtime::bank::Bank;
 use solana_runtime::locked_accounts_results::LockedAccountsResults;
 use solana_sdk::genesis_block::GenesisBlock;
 use solana_sdk::timing::duration_as_ms;
 use solana_sdk::timing::MAX_RECENT_BLOCKHASHES;
+use solana_sdk::transaction::Result;
 use std::result;
 use std::sync::Arc;
 use std::time::Instant;