Comment on: [INTEGRATION REQUEST] Collect all integration requests here

# [AirTrail](https://github.com/johanohly/AirTrail) **Is your feature request related to a problem? Please describe.** I have maintained all my flights in AirTrail. This is a great self-hosted tool for flight tracking, history and stats. I don't want to maintain those flights again and also want to keep using AirTrail. **Describe the solution you'd like** Integration with AirTrail to retrieve or link flight data from it that it's not necessary to maintain the flights again.