[WIP]Add ArgoCD Application Helm Chart

[ryehowell]

Description

This PR adds a new Helm chart to the helm-kubernetes-services repository. The new chart is an Argo CD Application wrapped as a Helm chart. This provides the ability to deploy ArgoCD Application CRDs as Helm charts.

TODOs

Read the Gruntwork contribution guidelines.

• [ ] Update the docs.
• [ ] Run the relevant tests successfully, including pre-commit checks.
• [ ] Ensure any 3rd party code adheres with our license policy or delete this line if its not applicable.
• [ ] Include release notes. If this PR is backward incompatible, include a migration guide.

Release Notes (draft)

• Added new Helm chart argocd-application

Migration Guide