Bazel: add codeql specific packaging library

This encapsulate arch specific logic, local installation and separation
of zip files into generic and arch-specific parts as required by the
internal build.

misc/bazel/internal/install.py

@@ -0,0 +1,25 @@
+import argparse
+import pathlib
+import shutil
+import subprocess
+from python.runfiles import runfiles
+
+runfiles = runfiles.Create()
+if not runfiles:
+    raise Exception("Installer should be run with `bazel run`")
+
+parser = argparse.ArgumentParser()
+parser.add_argument("--destdir", type=pathlib.Path, required=True)
+parser.add_argument("--script", required=True)
+parser.add_argument("--build-file", required=True)
+opts = parser.parse_args()
+
+script = runfiles.Rlocation(opts.script)
+build_file = runfiles.Rlocation(opts.build_file)
+destdir = pathlib.Path(build_file).parent / opts.destdir
+
+if destdir.exists():
+    shutil.rmtree(destdir)
+
+destdir.mkdir(parents=True)
+subprocess.run([script, "--destdir", destdir], check=True)