[Feature] Add Sidebar Navigation & Page Group Options

## Summary

User:
> Just a question, in the editing view.
> There is the ability to search and filter pages quite easily, would it not make sense to be able to do this in the view version?
> This would not be altogether to different to how ServiceNow looks, where you have a ton of pages you can search through :slight_smile: And certain pages are accesible if you have the right role

## Motivation

Too many pages in app.

## Additional Context

[Front conversations](https://app.frontapp.com/open/top_6u0jw)