feat: display wrong timer

app/src/main/java/gui/widget/TimerRenderer.java

@@ -0,0 +1,27 @@
+package gui.widget;
+
+import imgui.ImGui;
+
+public class TimerRenderer {
+
+	private float time;
+	private final float duration;
+
+	public TimerRenderer(float duration) {
+		this.time = 0;
+		this.duration = duration;
+	}
+
+	public void render() {
+		this.time += ImGui.getIO().getDeltaTime();
+		float remainingTime = this.duration - this.time;
+		int seconds = (int) remainingTime;
+		int minutes = seconds / 60;
+		seconds %= 60;
+		String text = minutes + ":" + seconds;
+		var textSize = ImGui.calcTextSize(text);
+		ImGui.setCursorPosX(ImGui.getIO().getDisplaySizeX() / 2.0f - textSize.x / 2.0f);
+		ImGui.text(text);
+	}
+
+}