Run playground code in a Web Worker

[PaperPrototype]

This already technically works and can be enabled via disableWebWorker but I broke it when I added CanvasRenderingContext2D and Input

• Context2D - Need to pass an OffscreenCanvas to the initializeWasmSharpModule instead of HTMLCanvasElement
• Input - Send input through post message and then call the assemblyExports.Input methods using Comlink (eg. assemblyExports.Input.CallMouseUp(x, y)