fix: 🐛 deck is not clearing up canvas when showing\exiting

When Deck instance is created, it does not reset the canvas by default.
The same applies when exiting the deck, it does not reset it. With this
commit it will reset the canvas and show\hide cursor by default, when
entering the presentation mode and exiting from it.

packages/kittik-deck/src/Deck.ts

@@ -19,7 +19,7 @@ export declare interface Deck {
 }
 
 export class Deck extends EventEmitter {
-  public canvas: Canvas = Canvas.create();
+  public canvas: Canvas = Canvas.create().reset().hideCursor();
   private readonly slides: Slide[] = [];
   private isRendering = false;
   private currentSlideIndex = 0;
@@ -117,6 +117,7 @@ export class Deck extends EventEmitter {
     process.stdin.pause();
     process.stdin.removeAllListeners();
 
+    this.canvas.reset().showCursor();
     this.emit('exit');
   }