feat: show recording input meter

main.ts

@@ -43,6 +43,9 @@ export default class NibbleAI extends Plugin {
 		this.recorder.setDeviceId(deviceId);
 
 		this.statusBar = new StatusBar(this);
+		this.recorder.setInputLevelCallback((level) => {
+			this.statusBar.updateInputLevel(level);
+		});
 
 		this.proofreader = new Proofreader(this);
 		this.titleGenerator = new TitleGenerator(this);