Added github actions workflow to package and push helm chart

.github/workflows/package_and_push_helm_chart.yaml

@@ -0,0 +1,56 @@
+name: Package and Push Helm Chart
+
+on:
+  push:
+    branches:
+      - dev
+      - release
+      - devops/FAIRSPC-55_github_actions
+  workflow_dispatch:
+    inputs:
+      name:
+        description: "Manual trigger for Helm chart packaging and pushing"
+      release_type:
+        description: "Release or snapshot version?"
+        required: true
+        default: "SNAPSHOT"
+        options:
+          - "SNAPSHOT"
+          - "RELEASE"
+
+jobs:
+  deploy:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Setup Helm
+        uses: azure/setup-helm@v4.1.0
+        with:
+          version: ${{ vars.HELM_VERSION }}
+
+      - name: Login with Helm
+        run: |
+          echo ${{ secrets.GITHUB_TOKEN }} | helm registry login ${{ vars.HELM_REGISTRY }} --username ${{ github.repository_owner }} --password-stdin
+
+      - name: Add/update Helm dependencies
+        run: |
+          helm repo add codecentric https://codecentric.github.io/helm-charts
+          helm dependency update "charts/fairspace-keycloak"
+
+      - name: Prepare version
+        run: |
+          VERSION=$(cat ./VERSION)
+          echo "VERSION=$VERSION" >> $GITHUB_ENV
+
+      - name: Package and Push Helm chart to repository
+        run: |
+          helm package "charts/fairspace-keycloak" --version ${{ env.VERSION }}
+          helm push "fairspace-keycloak-${{ env.VERSION }}.tgz" "oci://${{ vars.HELM_REGISTRY }}"
+          echo "Pushed package to repository"
+
+      - name: Clean up
+        run: |
+          rm -rf "fairspace-keycloak*.tgz"