Remove Internet Explorer from tests, add Webkit

[gabalafou]

Closes #349.

[gabalafou]

This doesn't work on my machine, even though I have a Mac.

When I try to run yarn test:webkit, I get the following console output:

$ cd tests && karma start --browsers=Webkit

START:
15 09 2022 19:59:51.320:WARN [filelist]: Pattern "/Users/gabriel/dev/lumino/packages/algorithm/tests/lib/bundle.test.js" does not match any file.
15 09 2022 19:59:51.335:INFO [karma-server]: Karma v6.4.0 server started at http://localhost:9876/
15 09 2022 19:59:51.335:INFO [launcher]: Launching browsers Webkit with concurrency unlimited
15 09 2022 19:59:51.340:INFO [launcher]: Starting browser Webkit
15 09 2022 19:59:51.342:ERROR [launcher]: No binary for Webkit browser on your platform.
  Please, set "WEBKIT_BIN" env variable.

[fcollonval]

I suggest to switch to playwright as browser provider: see https://maksimrv.medium.com/unit-testing-javascript-with-karma-playwright-puppeteer-1d54139d422

That will help setting up test environment.

[gabalafou]

@fcollonval, like this? My last commit adds Playwright as a dependency to all of the packages that have Karma tests.

On my machine, I was able to run yarn test:webkit from the root and all of the tests pass now.

[blink1073]

LGTM, thanks!