Add offline signing support to CLI (#7104)

cli/src/display.rs

@@ -1,4 +1,5 @@
 use console::style;
+use solana_sdk::transaction::Transaction;
 
 // Pretty print a "name value"
 pub fn println_name_value(name: &str, value: &str) {
@@ -22,3 +23,14 @@ pub fn println_name_value_or(name: &str, value: &str, default_value: &str) {
         println!("{} {}", style(name).bold(), style(value));
     };
 }
+
+pub fn println_signers(tx: &Transaction) {
+    println!();
+    println!("Blockhash: {}", tx.message.recent_blockhash);
+    println!("Signers (Pubkey=Signature):");
+    tx.signatures
+        .iter()
+        .zip(tx.message.account_keys.clone())
+        .for_each(|(signature, pubkey)| println!("  {:?}={:?}", pubkey, signature));
+    println!();
+}