Add ui to Backstage Software Catalog

[mario-mui]

TL;DR

This pull request registers ui, as a component in our Backstage Software Catalog. It lists our team, dp, as the owners of this component. After this file has merged, you can view this component in Backstage Software Catalog here: → http://192.168.162.45:32369/catalog

What is Portal?

Portal is an internal developer portal based on Backstage. It's goal is making developers' lives easier. Portal unifies all your infrastructure tooling, services, and documentation to create a streamlined development environment from end to end.

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Latest commit: 827f3a8a42eb22e7f558a731a614a121e567cef1

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