message: Use `sign_apk` in `add_assets.py`
  Summary: Do not run custom signing. Instead, use the `pyredex` helper. This will transition to `apksigner`, and better ability to find the tooling.
diff: import argparse
  import os
  -import subprocess
  -import sys
  import zipfile
  +from pyredex.utils import sign_apk
  +
  parser = argparse.ArgumentParser()
  parser.add_argument("apk", help="Input APK file")
  @@ -23,19 +23,4 @@ with zipfile.ZipFile(args.apk, "a") as zf:
  for asset in args.assets:
  zf.write(asset, os.path.join("assets", os.path.basename(asset)))
  -subprocess.check_call(
  - [
  - "jarsigner",
  - "-sigalg",
  - "SHA1withRSA",
  - "-digestalg",
  - "SHA1",
  - "-keystore",
  - args.keystore,
  - "-storepass",
  - args.keypass,
  - args.apk,
  - args.keyalias,
  - ],
  - stdout=sys.stderr,
  -)
  +sign_apk(args.keystore, args.keypass, args.keyalias, args.apk)
  