Add view type as a template for IRenderer, Application

[bigtimebuddy]

Current Issue

Since we are using ICanvas as a generic interface for OffscreenCanvas, HTMLCanvasElement and Node's canvas, we are getting a type error doing something pretty basic:

const app = new Application();
document.body.appendChild(app.view); // ERROR: Argument of type `ICanvas` is not assignable to type 'Node'

Workaround

Current workaround is to cast:

document.body.appendChild(app.view as HTMLCanvasElement);

Fix

Use a template to specify the type of view.

const app = new Application<HTMLCanvasElement>();
document.body.appendChild(app.view);

const renderer = autoDetectRenderer<HTMLCanvasElement>();
document.body.appendChild(renderer.view);

[Julien-Marcou]

Would be nice if the Application could automatically type itself to Application<OffscreenCanvas>, Application<HTMLCanvasElement> or Application<NodeCanvasElement> depending on the context, but I'm not sure that's possible.

[Julien-Marcou]

LGTM!

[SuperSodaSea]

LGTM!

[171h]

good

[171h]

LGTM！