add github-actions documentation

[Killpit]

There was an issue about documentations in GitHub Actions and had to look for the GitHub repo, added GitHub Actions documentation in ci-cd part to make sure it can easily be learned and utilised for CI/CD without further research for users

[Killpit]

@sigmavirus24, I did the recommended changes, can you check it again?

[Killpit]

@sigmavirus24 I did the changes, can you check again

[sigmavirus24]

I left specific comments but please look at the other rst files to understand the proper way to write RST and follow the same general style

[Killpit]

@sigmavirus24 can you check the changes again, I looked at your suggestions and other .rst files to format the changes and also formatted the list table to further be compliant with the .rst rules. Even had a last commit

[ericwb]

Output of the docs build: https://bandit--1172.org.readthedocs.build/en/1172/

[Killpit]

I added index.rst similar to other directories, can you review it again? @sigmavirus24 @ericwb

[sigmavirus24]

That is not what Eric meant

[sigmavirus24]

The file needs to be referenced in a toctree from an existing document. Now that index you generated is also a leaf

[Killpit]

@sigmavirus24 @ericwb I think I did what you guys asked, can you check again

[Killpit]

@ericwb @sigmavirus24 completed all the suggestions, can you guys check again