Added 'Test All Indexers' table and functionality to the Indexers tab, and upgraded to Ratatui 0.24.0 and cleaned up code for newer Ratatui version

src/app/key_binding_tests.rs

@@ -21,6 +21,7 @@ mod test {
   #[case(DEFAULT_KEYBINDINGS.events, Key::Char('e'), "events")]
   #[case(DEFAULT_KEYBINDINGS.logs, Key::Char('l'), "logs")]
   #[case(DEFAULT_KEYBINDINGS.tasks, Key::Char('t'), "tasks")]
+  #[case(DEFAULT_KEYBINDINGS.test, Key::Char('t'), "test")]
   #[case(DEFAULT_KEYBINDINGS.refresh, Key::Ctrl('r'), "refresh")]
   #[case(DEFAULT_KEYBINDINGS.update, Key::Char('u'), "update")]
   #[case(DEFAULT_KEYBINDINGS.home, Key::Home, "home")]