Add the private repo authentication functionality for uv

[meliz19]

Description

The purpose of this ticket is to add the private repo authentication functionality for uv, similar to what we already have in place for Poetry.

DoD

• Add the private repo authentication functionality for uv
• Add example project
• Update README docs

Test Steps

• mvn clean install -Pbootstrap
• mvn clean install -Puv

[meliz19]

Closing as OBE.