Set up actions/lableler (#2783)

Author: ericcornelissen

.github/labeler.yml

@@ -0,0 +1,23 @@
+demo:
+  - changed-files:
+    - any-glob-to-any-file: 'contributions/demo/**'
+
+contribution_to_opensource:
+  - changed-files:
+    - any-glob-to-any-file: 'contributions/open-source/**'
+
+feedback:
+  - changed-files:
+    - any-glob-to-any-file: 'contributions/feedback/**'
+
+presentation:
+  - changed-files:
+    - any-glob-to-any-file: 'contributions/presentation/**'
+
+scientific-paper:
+  - changed-files:
+    - any-glob-to-any-file: 'contributions/scientific-paper/**'
+
+tutorial:
+  - changed-files:
+    - any-glob-to-any-file: 'contributions/executable-tutorial/**'

.github/workflows/labeler.yml

@@ -0,0 +1,14 @@
+name: Pull Request Labeler
+on:
+  - pull_request_target
+
+jobs:
+  labeler:
+    permissions:
+      contents: read
+      pull-requests: write
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/labeler@634933edcd8ababfe52f92936142cc22ac488b1b # v6.0.1
+        with:
+          sync-labels: true