feat(keyring): improve password save prompt handling (#190)

- Added support for empty input and lowercase 'y'/'n' in save prompt.
- Enhanced user experience by allowing more intuitive responses using default.

Author: richardhapb

src/keyring.rs

@@ -31,12 +31,12 @@ pub fn get_password(connection_name: &str, username: &str) -> Result<Password> {
         io::stdout().flush()?;
         io::stdin().read_line(&mut save)?;
         match save.trim() {
-          "Y" => {
+          "" | "Y" | "y" => {
             entry.set_password(&password)?;
             println!("Password saved in keyring");
             Ok(())
           },
-          "n" => {
+          "n" | "N" => {
             println!("Password not saved in keyring");
             Ok(())
           },