Small helper that expands MAVLink XML dialects into JSON.

• Requires Python 3.11+
• Usage:
  • python3 xml2json.py path/to/dialect.xml > dialect.json

• .github/workflows/sync-mavlink.yml runs every Monday (and on manual dispatch).
• It clones mavlink/mavlink, converts every message_definitions/v1.0/*.xml to JSON with xml2json.py, writes them to message_definitions/v1.0/, and auto-commits the results.