Fixes static analysis errors and adds pipeline with Github Actions

[mdjunior]

Context

This PR updates the GSH code with pipelines using Github Actions. The purpose of adding Github Actions is to allow other contributors to test the software using their forks.

Additionally, this PR solves the problems encountered by static analysers found in the pipeline. No functionality has been added or removed. There was no change in the comments, just the linter that added new spaces.

[mdjunior]

If Github Actions is an issue, I can cherry pick the commits with just the fixes. Please let me know as I prepare another PR.