Implement help center

[AllieMendes]

Feature description As we've added new actions to the header and we want to streamline where users can find resources, we're introducing a help center. This addition will also improve community support, with the introduction of a version label and an embedded changelog that will warn users if their version is out of date.

Additional context If you want to tackle this task, feel free to share with us your email address so we can give you access to the Figma project :) I'll also be happy to provide a feature walkthrough through video or call.