Add Runic formatter

.github/workflows/Runic.yml

@@ -0,0 +1,36 @@
+name: Runic formatting
+on:
+  push:
+    branches:
+      - 'master'
+      - 'release-'
+    tags:
+      - '*'
+  pull_request:
+jobs:
+  runic:
+    name: Runic
+    runs-on: ubuntu-latest
+    # Permissions needed for reviewdog/action-suggester to post comments
+    permissions:
+      contents: read
+      checks: write
+      issues: write
+      pull-requests: write
+    steps:
+      - uses: actions/checkout@v4
+      # - uses: julia-actions/setup-julia@v2
+      #   with:
+      #     version: '1'
+      # - uses: julia-actions/cache@v2
+      - uses: fredrikekre/runic-action@v1
+        with:
+          version: '1'
+          format_files: true
+        # Fail on next step instead
+        continue-on-error: ${{ github.event_name == 'pull_request' }}
+      - uses: reviewdog/action-suggester@v1
+        if: github.event_name == 'pull_request'
+        with:
+          tool_name: Runic
+          fail_level: warning