Inversion of loop logic

It makes use of EmuKit 0.10 features, allowing inversion of control in the main loop.

Dramatically simplifies the main game loop logic.

frontends/web/ts/chip8.ts

@@ -125,10 +125,6 @@ export class Chip8Emulator extends EmulatorLogic implements Emulator {
         // marks the vertical blank interrupt effectively indicating
         // that a new frame can be drawn from a logical point of view
         this.chip8.vblank_wa();
-
-        // updates the next update time reference to the, so that it
-        // can be used to control the game loop
-        this.nextTickTime += 1000 / this.visualFrequency;
     }
 
     /**