lint: Add `lint-qt-translation.py`

test/lint/lint-qt-translation.py

@@ -0,0 +1,23 @@
+#!/usr/bin/env python3
+#
+# Copyright (c) 2023-present The Bitcoin Core developers
+# Distributed under the MIT software license, see the accompanying
+# file COPYING or https://opensource.org/license/mit/.
+#
+# Check for leading whitespaces in the translatable strings.
+
+import subprocess
+import sys
+
+
+def main():
+    tr_strings = subprocess.run(['git', 'grep', '-e', 'tr("[[:space:]]', '--', 'src/qt'], stdout=subprocess.PIPE, text=True).stdout
+
+    if tr_strings.strip():
+        print("Avoid leading whitespaces in:")
+        print(tr_strings)
+        sys.exit(1)
+
+
+if __name__ == "__main__":
+    main()