Push ArtifactHub verification to ghcr (#347)

* chore: add helm/artifacthub-repo.yml

* ci: add pipeline

.github/workflows/publish-artifacthub.yml

@@ -0,0 +1,31 @@
+name: Artifact Repo Publish
+
+on:
+  push:
+    branches: [main]
+    paths: [helm/artifacthub-repo.yml]
+
+jobs:
+  upload-artifact-repo-config:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - name: Install oras
+        run: |
+          curl -L https://github.com/oras-project/oras/releases/download/v1.1.0/oras_1.1.0_linux_amd64.tar.gz -o oras.tar.gz
+          tar -xzf oras.tar.gz oras
+          sudo mv oras /usr/local/bin
+          rm oras.tar.gz
+      - name: Docker Login
+        uses: docker/[email protected]
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+      - name: oras push
+        working-directory: ./helm
+        run: |
+          oras push \
+            ghcr.io/nmshd/backbone-helm-chart:artifacthub.io \
+            --config /dev/null:application/vnd.cncf.artifacthub.config.v1+yaml \
+            artifacthub-repo.yml:application/vnd.cncf.artifacthub.repository-metadata.layer.v1.yaml

helm/artifacthub-repo.yml

@@ -0,0 +1,4 @@
+repositoryID: 11704731-627d-4eec-9078-33b96c55a846
+owners:
+  - name: tnotheis
+    email: [email protected]