feat(cd): added chart release workflow

.github/workflows/configs/cr.yaml

@@ -0,0 +1,6 @@
+## Reference: https://github.com/helm/chart-releaser
+index-path: "./index.yaml"
+
+# Enable automatic generation of release notes using GitHubs release notes generator.
+# see: https://docs.github.com/en/repositories/releasing-projects-on-github/automatically-generated-release-notes
+generate-release-notes: true

.github/workflows/release.yml

@@ -0,0 +1,62 @@
+## Reference: https://github.com/helm/chart-releaser-action
+name: Chart Publish
+on:
+  push:
+    branches:
+    - main
+    paths:
+    - "charts/**"
+
+permissions:
+  contents: read
+
+jobs:
+  publish:
+    permissions:
+      contents: write # for helm/chart-releaser-action to push chart release and create a release
+      packages: write # to push OCI chart package to GitHub Registry
+    runs-on: ubuntu-latest
+    steps:
+    - name: Checkout
+      uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4.1.1
+      with:
+        fetch-depth: 0
+
+    - name: Install Helm
+      uses: azure/setup-helm@5119fcb9089d432beecbf79bb2c7915207344b78 # v3.5
+      with:
+        version: v3.10.1 # Also update in lint-and-test.yaml
+
+    - name: Configure Git
+      run: |
+        git config user.name "$GITHUB_ACTOR"
+        git config user.email "$GITHUB_ACTOR@users.noreply.github.com"
+
+    ## This is required to consider the old Circle-CI Index and to stay compatible with all the old releases.
+    - name: Fetch current Chart Index
+      run: |
+        git checkout origin/gh-pages index.yaml
+
+    - name: Run chart-releaser
+      uses: helm/chart-releaser-action@a917fd15b20e8b64b94d9158ad54cd6345335584 # v1.6.0
+      with:
+        config: "./.github/configs/cr.yaml"
+      env:
+        CR_TOKEN: "${{ secrets.GITHUB_TOKEN }}"
+
+    - name: Login to GHCR
+      uses: docker/login-action@343f7c4344506bcbf9b4de18042ae17996df046d # v3.0.0
+      with:
+        registry: ghcr.io
+        username: ${{ github.actor }}
+        password: ${{ secrets.GITHUB_TOKEN }}
+
+    - name: Push chart to GHCR
+      run: |
+        shopt -s nullglob
+        for pkg in .cr-release-packages/*.tgz; do
+          if [ -z "${pkg:-}" ]; then
+            break
+          fi
+          helm push "${pkg}" oci://ghcr.io/${{ github.repository }}
+        done