Add additional readline-like keybindings. (#524)

Adds the following conventional readline-like keybindings:

  - `Ctrl+H`: Delete the previous character.
  - `Ctrl+D`: Delete the next character.

Additionally, remaps the Debug Console command from Ctrl+D to Ctrl+O, which had been first introduced in PR #486.

packages/cli/src/ui/App.tsx

@@ -84,8 +84,7 @@ export const App = ({
     [consoleMessages],
   );
   useInput((input: string, key: InkKeyType) => {
-    // Check for Ctrl+D key press
-    if (key.ctrl && (input === 'd' || input === 'D')) {
+    if (key.ctrl && input === 'o') {
       setShowErrorDetails((prev) => !prev);
       refreshStatic();
     }