cvmts: replace jpeg-turbo native module with new rust module

This module also does threadpooling internally, so we don't need Piscina anymore (which I'm pretty sure was actually bottlenecking.)

cvmts/src/CollabVMServer.ts

@@ -810,7 +810,7 @@ export default class CollabVMServer {
 		let display = this.VM.GetDisplay();
 		let displaySize = display.Size();
 
-		let encoded = await JPEGEncoder.EncodeJpeg(display.Buffer(), displaySize, rect);
+		let encoded = await JPEGEncoder.Encode(display.Buffer(), displaySize, rect);
 
 		return encoded.toString('base64');
 	}