Move CI from Travis to GitHub Actions

[siriak]

• I have performed a self-review of my code
• My code follows the style guidelines of this project
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• Comments in areas I changed are up to date
• I have added comments to hard-to-understand areas of my code
• I have made corresponding changes to the README.md

[codecov]

Codecov Report

Patch and project coverage have no change.

Comparison is base (8a5db71) 95.75% compared to head (d0d9bd9) 95.75%.

❗ Current head d0d9bd9 differs from pull request most recent head 4d94705. Consider uploading reports for the commit 4d94705 to get more accurate results

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #388   +/-   ##
=======================================
  Coverage   95.75%   95.75%           
=======================================
  Files         218      218           
  Lines        8887     8887           
=======================================
  Hits         8510     8510           
  Misses        377      377           

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