Added labeler workflow

.github/labeler.yml

@@ -0,0 +1,9 @@
+documentation:
+  - "**/*.md"
+
+tests:
+  - "**/*_test.go"
+
+dependencies:
+  - g0.mod
+  - go.sum

.github/workflows/label.yml

@@ -0,0 +1,10 @@
+name: Labeler
+on: [pull_request]
+
+jobs:
+  label:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/labeler@v2
+      with:
+        repo-token: "${{ secrets.GITHUB_TOKEN }}"