Add automated msgfmt check workflow

Author: sba72

.github/workflows/po-check.yml

@@ -0,0 +1,22 @@
+name: Check PO Syntax
+
+on:
+  pull_request:
+    branches: [ "**" ]
+  push:
+    branches: [ "**" ]
+
+jobs:
+  check-po:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout Code
+        uses: actions/checkout@v4
+
+      - name: Install gettext
+        run: sudo apt-get update && sudo apt-get install -y gettext
+
+      - name: Validate PO files with msgfmt
+        run: |
+          find . -name "*.po" -exec msgfmt --check --check-format -o /dev/null {} +