[MVC] Create Vue Stub for the Super Sidebar

After the success of the [POC/Spike] - Vue Sidebar (#381718 - closed) we want to move forward and build the sidebar/navigation in Vue. For the first step in this plan, we want to create a stubbed version of the sidebar/navigation.

It should look exactly like the designs (or near enough) but with as little functionality as makes sense. It's a starting point for us to build off and improve upon. The focus should be on getting the architecture correct to set us up for iterative success.

Resources

• Design prototype
• Figma File

Things that might help

• [POC/Spike] - Vue Sidebar (#381718 - closed) Can be used as a base, or just a reference to start us off.
• Navigation Accessibility Review (#382850 - closed) Has some prior work that helps inform the most accessible markup.
• Feature flag discussion is on-going: !101910 (comment 1200199043)