Feat: Migrate to Github Actions

[faisalill]

What's Changed:

Replaced travis.yml with suitabl .github/workflows/tests.yml

Testing Plan:

Opening a PR runs tests: Github Actions Example: https://github.com/faisalill/cli/pull/1 Travis For the same: https://app.travis-ci.com/github/utopia-php/cli/jobs/606224762 Both Pass

Related Issue:

https://github.com/utopia-php/framework/issues/103

Should I include nightly version too And phpstan is not used should it be added???