CLI: collect and deduplicate signers (#8398)

* Rename (keypair util is not a thing)

* Add method to generate_unique_signers

* Cli: refactor signer handling and remote-wallet init

* Fixup unit tests

* Fixup intergation tests

* Update keypair path print statement

* Remove &None

* Use deterministic key in test

* Retain storage-account as index

* Make signer index-handling less brittle

* Cache pubkey on RemoteKeypair::new

* Make signer_of consistent + return pubkey

* Remove &matches double references

* Nonce authorities need special handling

cli/tests/deploy.rs

@@ -3,7 +3,7 @@ use solana_cli::cli::{process_command, CliCommand, CliConfig};
 use solana_client::rpc_client::RpcClient;
 use solana_core::validator::new_validator_for_tests;
 use solana_faucet::faucet::run_local_faucet;
-use solana_sdk::{bpf_loader, pubkey::Pubkey};
+use solana_sdk::{bpf_loader, pubkey::Pubkey, signature::Keypair};
 use std::{
     fs::{remove_dir_all, File},
     io::Read,
@@ -38,6 +38,7 @@ fn test_cli_deploy_program() {
         .unwrap();
 
     let mut config = CliConfig::default();
+    let keypair = Keypair::new();
     config.json_rpc_url = format!("http://{}:{}", leader_data.rpc.ip(), leader_data.rpc.port());
     config.command = CliCommand::Airdrop {
         faucet_host: None,
@@ -45,6 +46,7 @@ fn test_cli_deploy_program() {
         pubkey: None,
         lamports: minimum_balance_for_rent_exemption + 1, // min balance for rent exemption + leftover for tx processing
     };
+    config.signers = vec![&keypair];
     process_command(&config).unwrap();
 
     config.command = CliCommand::Deploy(pathbuf.to_str().unwrap().to_string());