Unit Tests don't work with A-Frame 1.2.0+

[diarmidmackenzie]

This PR gets all examples working with A-Frame 1.3.0.

However if we upgrade the version of A-Frame used in devDependencies past 1.1.0, we get browserify build errors when we run npm run test

To reproduce:

In package.json, devDependencies update A-Frame dependency like this:

"aframe": "^1.2.0",

run npm install
run npm test run

We get a long series of errors, starting like this:

C:\Users\ASUS\Documents\GitHub\AframeCommunity\aframe-physics-system>npm run test

> aframe-physics-system@4.0.1 test
> karma start ./tests/karma.conf.js

Deprecated private createPreprocessor() API
02 10 2022 12:28:30.426:INFO [preprocessor.env]: Publishing variables:  [ 'TEST_ENV' ]
02 10 2022 12:28:30.447:INFO [framework.browserify]: registering rebuild (autoWatch=true)
02 10 2022 12:28:34.492:ERROR [framework.browserify]: bundle error
02 10 2022 12:28:34.492:ERROR [framework.browserify]: Error: Cannot find module './debug' from 'C:\Users\ASUS\Documents\GitHub\AframeCommunity\aframe-physics-system\node_modules\aframe\dist'
02 10 2022 12:28:34.494:ERROR [framework.browserify]: bundle error
02 10 2022 12:28:34.495:ERROR [framework.browserify]: Error: Cannot find module './GetIntrinsic' from 'C:\Users\ASUS\Documents\GitHub\AframeCommunity\aframe-physics-system\node_modules\aframe\dist'
02 10 2022 12:28:34.496:INFO [framework.browserify]: bundle updated
02 10 2022 12:28:34.496:ERROR [framework.browserify]: bundle error
02 10 2022 12:28:34.497:ERROR [framework.browserify]: Error: Cannot find module '../GetIntrinsic' from 'C:\Users\ASUS\Documents\GitHub\AframeCommunity\aframe-physics-system\node_modules\aframe\dist'
02 10 2022 12:28:34.498:INFO [framework.browserify]: bundle updated
02 10 2022 12:28:34.498:ERROR [framework.browserify]: bundle error
02 10 2022 12:28:34.499:ERROR [framework.browserify]: Error: Cannot find module './helpers/assertRecord' from 'C:\Users\ASUS\Documents\GitHub\AframeCommunity\aframe-physics-system\node_modules\aframe\dist'

Not yet undersood what change from A-Frame 1.1.0 to 1.2.0 causes this, or how to fix it.

[vincentfretin]

I'll look into it once #3 is merged. I'll switch to webpack like I did for aframe and networked-aframe, it should be quick to do for me now that I have the experience.