Set up the GitHub Actions

[gomzyakov]

• Closes Remove laravel/sail #8
• Closes Remove laravel/pint #9
• Closes Seed demo-articles & categories #12

[codecov]

Codecov Report

❗ No coverage uploaded for pull request base (main@6e97ed5). Click here to learn what that means.
Patch has no changes to coverable lines.

Additional details and impacted files

@@          Coverage Diff           @@
##             main     #11   +/-   ##
======================================
  Coverage        ?   0.00%           
  Complexity      ?     150           
======================================
  Files           ?      55           
  Lines           ?     794           
  Branches        ?       0           
======================================
  Hits            ?       0           
  Misses          ?     794           
  Partials        ?       0           

Flag	Coverage Δ
unittests	0.00% <0.00%> (?)

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