E2E testing on major browsers

[liunate]

Run E2E testing at each push and pull-request on major browsers:

• [x] Chrome cypress supported

• [x] Firefox (done with #206) cypress supported ~Having problem running on git action with error msg Browser: 'firefox' was not found on your system or is not supported by Cypress, see cypress image open issue~

• [ ] Edge(chromium-based) cypress supported

• [ ] Edge(EdgeHTML/pre-chromium/IE11?) Not supported by cypress at this moment. See cypress IE 11 support github issue

• [ ] Safari Not supported by cypress at this moment. See cypress macOS Safari support github issue

[stefcameron]

#130 adds official FireFox support to Cypress and may help here.