Impl Display for KeyName

this change was made so that we can concat the KeyName with secure story
prefix and service

cmd/soroban-cli/src/commands/keys/generate.rs

@@ -122,10 +122,10 @@ impl Cmd {
         } else if self.secure_store {
             // secure_store:org.stellar.cli:<key name>
             let entry_name_with_prefix = format!(
-                "{}{}-{:?}",
+                "{}{}-{}",
                 keyring::SECURE_STORE_ENTRY_PREFIX,
                 keyring::SECURE_STORE_ENTRY_SERVICE,
-                self.name.to_string()
+                self.name
             );
 
             //checking that the entry name is valid before writing to the secure store

cmd/soroban-cli/src/config/address.rs

@@ -1,4 +1,7 @@
-use std::str::FromStr;
+use std::{
+    fmt::{self, Display, Formatter},
+    str::FromStr,
+};
 
 use crate::xdr;
 
@@ -87,6 +90,12 @@ impl std::str::FromStr for KeyName {
     }
 }
 
+impl Display for KeyName {
+    fn fmt(&self, f: &mut Formatter<'_>) -> fmt::Result {
+        write!(f, "{}", self.0)
+    }
+}
+
 fn allowed_char(c: char) -> bool {
     c.is_ascii_alphanumeric() || c == '_' || c == '-'
 }