Display links in user library

**Is your feature request related to a problem? Please describe.**
We can configure custom links in the settings and these links are displayed in the flow executor which is great. However they are missing in the user library and the admin interface.

The national transpositions of the EU eCommerce Directive and GDPR require European users to display imprint/legal links - as well as data protection or privacy notices - everywhere where a user end up at.

A persistent footer link is generally sufficient for both national transpositions of the EU eCommerce Directive and GDPR itself.

Not displaying these links in the user library and the admin library can create liability issues for some use cases. Consider a B2B example where another business would reasonably have internal authentik users rather than external, maybe some isolated admin access even.

**Describe the solution you'd like**
Display the configured links in the user library and the admin interface.

**Describe alternatives you've considered**
N/A

**Additional context**
N/A