added helm chart workflow

.gitea/workflows/helm-chart.yaml

@@ -0,0 +1,42 @@
+name: Publish Helm Chart
+
+on:
+  push:
+    branches:
+      - main
+
+jobs:
+  build-and-publish:
+    name: Build and Publish Helm Chart
+    runs-on: ubuntu-latest
+
+    steps:
+      # Checkout Code
+      - name: Checkout Code
+        uses: actions/checkout@v3
+
+      # Set up Helm CLI
+      - name: Install Helm CLI
+        run: |
+          curl -fsSL https://raw.githubusercontent.com/helm/helm/main/scripts/get-helm-3 | bash
+
+      # Build Helm Chart
+      - name: Package Helm Chart
+        run: |
+          helm package helm/ -d ./packages/
+
+      # Login to Gitea OCI Registry
+      - name: Login to Gitea OCI Registry
+        env:
+          OCI_USERNAME: ${{ secrets.GITEA_USERNAME }}
+          OCI_PASSWORD: ${{ secrets.GITEA_PASSWORD }}
+        run: |
+          helm registry login -u "$OCI_USERNAME" -p "$OCI_PASSWORD" https://git.unkrig.dev
+
+      # Push Chart to OCI Registry
+      - name: Push Chart to OCI Registry
+        env:
+          OCI_USERNAME: ${{ secrets.GITEA_USERNAME }}
+          OCI_PASSWORD: ${{ secrets.GITEA_PASSWORD }}
+        run: |
+          helm push ./packages/*.tgz oci://git.unkrig.dev/helm-charts