Add the (Automated) Chart Documentation

[fonzdm]

• Please check if the PR fulfills these requirements

• The branch naming convention follows our guidelines
• Docs have been added / updated (for bug fixes / features)

• What kind of change does this PR introduce? (Bug fix, feature, docs update, ...)

An auto-generated documentation for the chart is introduced with this PR.
The documentation is produced based on comments of the values.yaml file, and the overall chart structure.
A pipeline takes care of fetching the chart changes and update the documentation with a dedicated commit, authored "Servarr Bot 🤖"

• What is the current behavior? (You can also link to an open issue here)

No documentation exists for the chart.

• What is the new behavior (if this is a feature change)?

Everytime someone touches the chart, the documentation is produced/updated.
Users can follow the documentation to fill a values.yaml file for their deployments.

• Does this PR introduce a breaking change? (What changes might users need to make in their application due to this PR?)

It's not a breaking change but it's a core functionality.

• Other information:

Some other refactoring will be done to the values.yaml, but it is not in scope of this PR.

Closes #12

[fonzdm]

Let me fix that linting pipeline.

[imgios]

Hey @fonzdm, just finished to look at it and I leaved some questions all around. Please, let me know your POV.

[fonzdm]

@imgios please check, everything resolved.

[imgios]

@imgios please check, everything resolved.

Thank you for taking care of it. Everything seems to be fine, going to merge it into dev 🚀