feat(ci): add labeler

relates to STACKITSDK-217

Author: rubenhoenle

.github/workflows/labeler.yaml

@@ -0,0 +1,24 @@
+name: "Labeler"
+on:
+  pull_request:
+    types: [opened, synchronize]
+  workflow_dispatch:
+
+jobs:
+  labeler:
+    permissions:
+      contents: read
+      pull-requests: write
+      issues: write
+    name: "Labeler"
+    runs-on: ubuntu-latest
+    steps:
+      # Re-uses the labeler config from the Go SDK, so we only need to maintain one single config file
+      - name: Fetch labeler config from STACKIT Go SDK
+        run: |
+          curl -sSL -o remote-labeler.yml https://raw.githubusercontent.com/stackitcloud/stackit-sdk-go/feat/labeler/.github/labeler.yml 
+      - name: Labeler action
+        uses: actions/labeler@v6
+        with:
+          configuration-path: "remote-labeler.yml"
+          sync-labels: false