Implemented GitHub Actions workflow for automated binary file building.

[DainiusSal]

Implemented an automated building of binary files through GitHub Actions workflow. The action executes automatically after a new release is created and uploads the binary files and the signature file to the release assets.

Notes:

1. All files could be compiled using make release command in the future. darwin-arm64 binary requires MacOS to be built and it is the most expensive machine on GitHub Actions, so not worth building everything on it.
2. There needs to be two extra secrets added to the repository: GPG_PRIVATE_KEY and GPG_PASSPHRASE for signing the binaries (more information here)

[synfinatic]

LGTM at this point, but I would request that the 4 commits are squashed. Thanks!

[DainiusSal]

Squashed the commits :)

[codecov]

Codecov Report

Merging #433 (bd6ac6e) into main (33d6564) will not change coverage.
The diff coverage is n/a.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #433   +/-   ##
=======================================
  Coverage   78.30%   78.30%           
=======================================
  Files          23       23           
  Lines        2608     2608           
=======================================
  Hits         2042     2042           
  Misses        498      498           
  Partials       68       68           

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