Adding a helm with git example. (#1596)

## Description

This adds an example to pull in a Helm chart from a git repository.

## Related Issue

N/A

## Type of change

- [ ] Bug fix (non-breaking change which fixes an issue)
- [ ] New feature (non-breaking change which adds functionality)
- [x] Other (security config, docs update, etc)

## Checklist before merging

- [ ] Test, docs, adr added or updated as needed
- [x] [Contributor Guide
Steps](https://github.com/defenseunicorns/zarf/blob/main/CONTRIBUTING.md#developer-workflow)
followed

Co-authored-by: Wayne Starr <[email protected]>

examples/helm-git-chart/README.md

@@ -0,0 +1,17 @@
+# Helm Git Chart
+This example shows how you can specify a Git repository chart for a helm source within a component's `charts`.
+
+:::info
+
+To view the example source code, select the `Edit this page` link below the article and select the parent folder.
+
+:::
+
+``` yaml
+components:
+ - name: component-name
+ charts:
+ - name: chart-name
+ url: url-to-git-repo.git
+ gitPath: path/to/chart/in/repo
+```

examples/helm-git-chart/zarf.yaml

@@ -0,0 +1,15 @@
+kind: ZarfPackageConfig
+metadata:
+ name: test-helm-git-chart
+ description: "Deploys a helm chart from git"
+components:
+ - name: demo-helm-git-chart
+ required: true
+ charts:
+ - name: podinfo
+ url: https://github.com/stefanprodan/podinfo.git
+ gitPath: charts/podinfo
+ namespace: podinfo-from-git
+ version: 6.3.5
+ images:
+ - "ghcr.io/stefanprodan/podinfo:6.3.5"