Meta: Add compiled_action from LLVM, use it to generate TZDB sources

Author: https://github.com/ADKaster
Commit: b1e94a02fe
Pull-request: https://github.com/SerenityOS/serenity/pull/18663
Reviewed-by: https://github.com/BenWiederhake
Reviewed-by: https://github.com/BertalanD
Reviewed-by: https://github.com/nico

Meta/gn/build/run_compiled_binary.py

@@ -0,0 +1,8 @@
+#!/usr/bin/env python3
+"""Runs a built binary."""
+
+import subprocess
+import sys
+
+# Prefix with ./ to run built binary, not arbitrary stuff from PATH.
+sys.exit(subprocess.call(['./' + sys.argv[1]] + sys.argv[2:]))