Adding helper function to detect input

[asengupta3]

Usage:

const detector = setupInputDetection();

console.log(detector.capability);
// { touch: boolean, mouse: boolean, primary: "touch" | "mouse" | "unknown" }

console.log(detector.getCurrentInput());
// "touch" | "mouse" | "keyboard" | "unknown" | null

This uses:

1. Both media query to preemptively determine the input method
2. But also adds listeners to update the values whenever interaction is detected
3. So this function can be called very early in the task load and then called whenever to get the most updated touch value

[digital-pro]

LGTM, or as I traditionally misread that acronym (LGTR -- Let the good times roll)

[CCuskley]

Looks good to me in terms of code - but do we want to consider aligning with ROAR tasks here? They're using these custom utils that draw on the detect-it package...I'm not necessarily sure it's better, but we might want to consider if/when the methods have discrepancies

[zwatson2001]

Looks good to me! I can test this on a few different devices before we merge, and I'm also happy to add this to H&F once we make a final decision about how to handle the instructions.