feat(ci): chart release workflow

Signed-off-by: Thuan Vo <thvo@redhat.com>

.github/helm-release-config.yml

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+release-name-template: "v{{ .Version }}"
+release-notes-file: .github/release-notes.md

.github/release-notes.md

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+<!-- Release notes generated using configuration in .github/release.yml -->

.github/release.yml

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+changelog:
+  categories:
+    - title: '🚀 Features'
+      label: 'feat'
+    - title: '🔧 Fixes'
+      label: 'fix'
+    - title: '📄 Documentation'
+      label: 'docs'
+    - title: '⚙️ Maintenance'
+      labels:
+        - 'chore'
+        - 'ci'
+        - 'cleanup'
+        - 'perf'
+        - 'refactor'
+        - 'style'
+        - 'test'

.github/workflows/helm-release.yml

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+name: Release Helm Chart
+
+on:
+  workflow_dispatch:
+
+jobs:
+  helm-release:
+    permissions:
+      contents: write
+    runs-on: ubuntu-latest
+    # if: ${{ github.repository_owner == 'cryostatio' }}
+    steps:
+      - uses: actions/checkout@v2
+        with:
+          fetch-depth: 0
+      - name: Configure Git
+        run: |
+          git config user.name "$GITHUB_ACTOR"
+          git config user.email "$GITHUB_ACTOR@users.noreply.github.com"
+      - name: Run chart-releaser
+        uses: helm/chart-releaser-action@v1.5.0
+        env:
+          CR_TOKEN: "${{ secrets.GITHUB_TOKEN }}"
+        with:
+          version: v1.5.0
+          charts_dir: charts
+          config: .github/helm-release-config.yml