ci: use github actions

[erisu]

Motivation, Context & Description

Drop Travis CI and AppVeyor for GitHub Actions

• Drop travis ci
• Drop appveyor
• Update coverage to include e2e tests
• Update test scripts

Testing

• npm t
• GitHub Actions Run

Checklist

• [x] I've run the tests to see all new and existing tests pass

[timbru31]

Is there any way we can see if the actions will succeed once merged?

[NiklasMerz]

Is there any way we can see if the actions will succeed once merged?

Looks like we can see the results in the fork. Seems good https://github.com/erisu/cordova-ios/actions

[erisu]

@timbru31 here is an example last run after the recent rebase: https://github.com/erisu/cordova-ios/actions/runs/111508020

[erisu]

I cleaned up the test changes and here is the latest CI run results:

https://github.com/erisu/cordova-ios/actions/runs/116486160