Create an example application using multi-source

We should have an example for a Multi0-source helm chart which is the most common use case

Source 1
- Helm chart from a remote registry
Source 2
- values file in git

Start by reviewing the repository's existing example applications and how they represent source configuration. Add an example showing a Helm chart from a remote registry alongside a values file from Git, then verify that the example clearly demonstrates this multi-source use case.

Written by the indexing model from the issue text.