move pipeline workflow to github actions

[ubogdan]

Describe the PR
Move the pipeline from travis-ci to GitHub actions

Relation issue
None.

Additional context
Builds and Tests are not working anymore.

[codecov]

Codecov Report

Merging #1001 (5e89fe7) into master (523e046) will increase coverage by 0.61%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master    #1001      +/-   ##
==========================================
+ Coverage   92.57%   93.19%   +0.61%     
==========================================
  Files           8        7       -1     
  Lines        1925     1924       -1     
==========================================
+ Hits         1782     1793      +11     
+ Misses         80       73       -7     
+ Partials       63       58       -5     

Impacted Files	Coverage Δ
operation.go	95.10% <100.00%> (+0.84%)	⬆️
parser.go	93.35% <100.00%> (+0.79%)	⬆️

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update a76cfa3...5e89fe7. Read the comment docs.

[ubogdan]

Long story short, travis-ci.com is offering one-time 10K credits for the "Free subscription" and is not accepting requests for OOS.

Swaggo organization reached this limit and then you visit travis-ci.com you can see the following message in the top of the page:
"Builds have been temporarily disabled for private and public repositories due to a negative credit balance. Please go to the Plan page to replenish your credit balance."

Another reference: atom/node-keytar#351

Please merge it ASAP so we can have builds and tests running.

Thanks.