Check if drawable is inside the viewport when drawing

[Nightre]

Proposed Changes

This PR adds support for not rendering sprites outside of the viewport.

Reason for Changes

Currently, when rendering sprites, all of them are rendered regardless of whether they are within the viewport or not. This can lead to unnecessary performance overhead, especially when dealing with a large number of sprites. By implementing the feature to not render sprites outside of the viewport, we can significantly improve the rendering performance and optimize resource usage.

(all clones outside the screen)

[GarboMuffin]

does this break offscreen touching?

[Nightre]

does this break offscreen touching?

It does not break offscreen touching, as Scratch's collision detection uses data that exists in the CPU (collision detection after effects is also done in the CPU through EffectTransform.js)