Migrate to github actions from travis-ci

[maratori]

No description provided.

[codecov]

Codecov Report

Merging #22 (6fe4142) into master (d0791bc) will not change coverage.
The diff coverage is n/a.

@@          Coverage Diff          @@
##           master    #22   +/-   ##
=====================================
  Coverage     100%   100%           
=====================================
  Files           1      1           
  Lines          21     27    +6     
=====================================
+ Hits           21     27    +6     

Impacted Files	Coverage Δ
pkg/testpackage/testpackage.go	100% <0%> (ø)

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