* feat: 🎸 Re-enabling footer for Boundary `admin-ui`
Re-enable global footer and fix styling
✅ Closes: ICU-6454
* refactor: 💡 added media-query code
Added media-query code for footer to expand on smaller screens.
* refactor: 💡 refactor footer to exist in sidebar-layout
Improved overall layout of content with footer by moving it to the
sidebar-layout
* refactor: 💡 continuous refactor of admin ui footer
Refactored sidebar layout to include grid footer with layout,
* refactor: 💡 collapse sidebar when absent
* refactor: improve css grid column collapse approach
Co-authored-by: Randall Morey <randall@randallmorey.com>