chore: add PR auto-label action

Author: heitorlessa

.github/auto-label.json

@@ -0,0 +1,10 @@
+{
+  "rules": {
+    "area/utilities": ["aws_lambda_powertools_python/utilities/", "aws_lambda_powertools_python/utilities/", "aws_lambda_powertools_python/middleware_factory/"],
+    "area/logger": ["aws_lambda_powertools_python/logging/"],
+    "area/tracer": ["aws_lambda_powertools_python/tracing/"],
+    "area/metrics": ["aws_lambda_powertools_python/metrics/"],
+    "documentation": ["docs/", "mkdocs.yml"],
+    "internal": ["Makefile", "CHANGELOG.md", "CONTRIBUTING.md"]
+  }
+}

.github/labeler.yml

@@ -0,0 +1,14 @@
+name: PR Auto Label
+on:
+  pull_request:
+    types: [opened, synchronize]
+
+jobs:
+  auto-label:
+    name: PR Auto Label
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: banyan/auto-label@1.2
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}