Add configuration options for Server Info section

[MarcEspiard]

Description

Added the ability to configure additional entries of the Info section:

• termsOfService
• license
• contact

Motivation and context

It wasn't possible to do so before this PR and was in the TODO list. We need it for our current project

How has this been tested?

Generation has been tested with and without the changes enabled, all works as intended. This is a very simple change.

Screenshots (if appropriate)

Types of changes

What types of changes does your code introduce? Put an x in all the boxes that apply:

• [ ] Bug fix (non-breaking change which fixes an issue)
• [x] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

Go over all the following points, and put an x in all the boxes that apply.

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• [x] I have read the CONTRIBUTING document.
• [x] My pull request addresses exactly one patch/feature.
• [x] I have created a branch for this patch/feature.
• [x] Each individual commit in the pull request is meaningful.
• [x] I have added tests to cover my changes.
• [x] If my change requires a change to the documentation, I have updated it accordingly.

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[MarcEspiard]

No problem, all done :)

[JaZo]

The only concern I have is that, when we merge this, all existing users will have the example.com URLs in their documentation. I think we should leave the defaults empty for now. Maybe just comment them out or something like that?