Add Admin Only Source For Chocolatey Core Packages

### Checklist

- [X] I have verified this is the correct repository for opening this issue.
- [X] I have verified no other issues exist related to my request.

### Is Your Feature Request Related To A Problem? Please describe.

Based on user feedback I would like to add an admin-only source that will host the client setup packages for Chocolatey's deployment script (the ones called by RegisterC4bEndpoint.ps1).

### Describe The Solution. Why is it needed?

This will keep ChocolateyInternal cleaner. Only showing packages that have been internalized by the Jenkins jobs.

### Additional Context

Would also like to add a Jenkins job to run and keep the packages hosted on this new source/repo up to date.

### Related Issues

_No response_