Add Sidebar component

[cowboycodr]

Prerequisites

• This feature already exists in shadcn/ui - if not, it won't be considered here so don't continue with your issue.

Describe the feature

Shadcn released a new sidebar component. Here's a quick demo:

sidebar.mp4

I'm willing to help. Not sure if my TypeScript skills are good enough to get it on the first try, though.

[cowboycodr]

Hunter finished the component, and is now working on the docs.
#1337
https://x.com/huntabyte/status/1848183702527922461