Added documentation for getting in touch about QHub

[peytondmurray]

Partially addresses #1076.

Changes introduced in this PR:

• Added a "References" directory to the documentation, one of the four main sections in the Diataxis documentation framework. See notion for more information.
• Added a getting_in_touch.md section with links to some of the places the QHub team can be contacted.

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds a feature)
• Breaking change (fix or feature that would cause existing features to not work as expected)
• Documentation Update
• Code style update (formatting, renaming)
• Refactoring (no functional changes, no API changes)
• Build related changes
• Other (please describe):

Testing

Requires testing

• Yes
• No

Further comments (optional)

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