Simplify touch handling with touch-events-handler.js

src/components/cursor-controller.js

src/components/pinch-to-move.js

src/hub.html

src/hub.js

src/utils/look-controls-toggle.js

src/utils/pinch-to-move.js

src/utils/pinch.js

src/utils/pointer-look-controls.js

src/utils/touch-events-handler.js