Issue

The ArgoCD autodiscovery plugin currently supports multiple sources only for Application resources,
not for ApplicationSet. When the autodiscovery runs in a folder containing ApplicationSets with
multiple sources, it fails to detect them:

ARGOCD
=======
Manifest detected: 0

Enhancement

Add support for ApplicationSet resources with multiple sources (spec.template.spec.sources[]).

Before

• Application with single source: spec.source ✅
• Application with multiple sources: spec.sources[] ✅
• ApplicationSet with single source: spec.template.spec.source ✅
• ApplicationSet with multiple sources: spec.template.spec.sources[] ➡️ Not supported

After

• Application with single source: spec.source ✅
• Application with multiple sources: spec.sources[] ✅
• ApplicationSet with single source: spec.template.spec.source ✅
• ApplicationSet with multiple sources: spec.template.spec.sources[] ✅

Test

To test this pull request, you can run the following commands:

cd pkg/plugins/autodiscovery/argocd
go test -v