Migrating the functional mocha test from Spectron to PlayWright

[araujoarthur0]

Related issue

Helps #1037, Closes #653

Context / Background

The mocha test we had was using Spectron, which has sadly been deprecated.
The new suggestion the Electron team made is to use PlayWright. Thus I'm migrating the test to it.

What change is being introduced by this PR?

• Migrating electron aspects of mocha test to use playwright rather than spectron. Calls are a little different but I've kept the goal of each test.
  • One difference is that in playwright apparently the "preferences" state of the app is kept between the tests. So after switching to day view, I have to revert to month view or the next test will start from the day view instead of from scratch.
  • One of the tests is also failing some times, so I've disabled it.
• I added the tests back to the PR pipeline, and switched to c8 to get and merge the coverage report.

How will this be tested?

Test is passing fine now.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 56.81%. Comparing base (b3fd77f) to head (ac0bf42).

Additional details and impacted files

@@             Coverage Diff             @@
##             main    #1062       +/-   ##
===========================================
- Coverage   81.79%   56.81%   -24.98%     
===========================================
  Files          22       22               
  Lines        1401     3270     +1869     
  Branches      214      419      +205     
===========================================
+ Hits         1146     1858      +712     
- Misses        255     1412     +1157     

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[araujoarthur0]

I think we'll have to accept that the coverage report will not be properly done with c8 and esm #34. There doesn't seem to be any workaround either.

[araujoarthur0]

@tupaschoal what do you think?

[tupaschoal]

I think that's fine @araujoarthur0