Add basic github action to test build

[utzcoz]

It adds basic GitHub Actions to test build only now.

[utzcoz]

Hi @yrezgui, could you help to review this PR? Thanks.

[utzcoz]

Test result is here: https://github.com/utzcoz/modernstorage/runs/2557357435?check_suite_focus=true

[utzcoz]

Hi @yrezgui , is there any update for it ? I rebased it to current main branch.

[utzcoz]

New running result with new spotless checking commit is here: https://github.com/utzcoz/modernstorage/runs/2785008975 .

[yrezgui]

I've added some suggestions. Thanks @utzcoz !

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[utzcoz]

New running result is here: https://github.com/utzcoz/modernstorage/runs/2785626392.

[utzcoz]

Thanks.