Automations - Check pull requests for changelog modification (#785)

* Creat workflow to check for changelog updates on pr

* checkout v3

.github/workflows/Changelog Police.yml

@@ -0,0 +1,22 @@
+name: Check Changelog has been updated
+
+on:
+  pull_request:
+    types: [opened, edited, synchronize]
+
+jobs:
+  changelog-check:
+    runs-on: ubuntu-latest
+    steps:
+    - name: Checkout repository
+      uses: actions/checkout@v3
+
+    - name: Check if changelog has been updated
+      run: |
+        if ! git diff --name-only origin/main...HEAD | grep -q '\.github\CHANGELOG.md'; then
+          echo "Changelog not updated. Please update .github/CHANGELOG.md" >&2
+          exit 1
+        fi
+    - name: Notify success
+      if: success()
+      run: echo "Changelog has been updated."