chore: add labels according to title

.github/workflows/add-labels.yml

@@ -0,0 +1,32 @@
+name: Add Labels
+
+on: [issues, pull_request]
+
+jobs:
+  add_labels:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: Extract Label
+        id: extract-label
+        run: |
+          echo "::set-output name=labels_to_add::$(
+            node -e "
+              const title = process.env.TITLE;
+              const labelMapping = {
+                chore: 'chore',
+                feat: 'feature',
+                fix: 'bugfix',
+                refactor: 'enhancement',
+                test: 'enhancement',
+              };
+              const foundKey = Object.keys(labelMapping).find((label) => title && title.startsWith(label));
+              console.log(foundKey ? labelMapping[foundKey] : '');
+            "
+          )"
+        env:
+          TITLE: ${{ github.event.pull_request.title || github.event.issue.title }}
+      - uses: actions-ecosystem/action-add-labels@v1.1.0
+        with:
+          github_token: ${{ github.token }}
+          labels: ${{ steps.extract-label.outputs.labels_to_add }}