Create node.js.yml for npm test CI.

[jjsil]

• It checks out the code, sets up node, builds and runs the tests.
• Run tests in ChromeHeadless and do a single run.
• Run automatically after pushes and pull-requests in master and develop.

Needs to be merged after #770 to make sure the tests are green.
Resolves #740.

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud

[graphefruit]

Have pulled the dev repo and executed
npm test -- --browsers=ChromeHeadless --watch=false
->

 SUCCESS (0 secs / 2.609 secs)
Chrome Headless 127.0.6533.122 (Mac OS 10.15.7): Executed 161 of 162 (skipped 1)Chrome Headless 127.0.6533.122 (Mac OS 10.15.7): Executed 161 of 162 (skipped 1) SUCCESS (2.248 secs / 2.643 secs)
TOTAL: 161 SUCCESS
TOTAL: 161 SUCCESS

Looks good