chore: refresh GitHub repository setup (#23)

* chore: refresh GitHub repository setup

* chore: align CI with Rust 1.88 MSRV

examples/single_line.rs

@@ -19,7 +19,7 @@ fn validate(textarea: &mut TextArea) -> bool {
             Block::default()
                 .borders(Borders::ALL)
                 .border_style(Color::LightRed)
-                .title(format!("ERROR: {}", err)),
+                .title(format!("ERROR: {err}")),
         );
         false
     } else {

examples/vim.rs

@@ -31,7 +31,7 @@ impl Mode {
             Self::Visual => "type y to yank, type d to delete, type Esc to back to normal mode",
             Self::Operator(_) => "move cursor to apply operator",
         };
-        let title = format!("{} MODE ({})", self, help);
+        let title = format!("{self} MODE ({help})");
         Block::default().borders(Borders::ALL).title(title)
     }
 
@@ -52,7 +52,7 @@ impl fmt::Display for Mode {
             Self::Normal => write!(f, "NORMAL"),
             Self::Insert => write!(f, "INSERT"),
             Self::Visual => write!(f, "VISUAL"),
-            Self::Operator(c) => write!(f, "OPERATOR({})", c),
+            Self::Operator(c) => write!(f, "OPERATOR({c})"),
         }
     }
 }