[MVC] - Persistent sidebar
<small>This MVC is related to the [super sidebar epic](https://gitlab.com/groups/gitlab-org/-/epics/9044) and you can see the full design there.</small>
In order to rely on a consolidated left sidebar approach, we must ensure the sidebar is always/usually present. We will need to consider outliers as to when it would be OK to not have the sidebar.
[Figma file](https://www.figma.com/file/WbSibY9a9T72I4ah2IHaV3/Navigation-North-Star-Path?node-id=1%3A15972)
#### Current pages without a sidebar
- "Your" items
- Issues
- Merge requests
- To-dos
- Activity
- Environments dashboard
- Operations dashboard
- "Your" / Global items
- Projects
- Groups
- Snippets
- Global items
- Milestones
- Profile page
- Create group
- Create project
- Create snippet
- Help
- Web IDE
### Intended users
* [All](https://about.gitlab.com/handbook/marketing/product-marketing/roles-personas/)
## Proposal
TBD - Add designs
### Documentation
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### Testing
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### What does success look like, and how can we measure that?
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epic