The dataclass contructor will not automatically convert the int in the
JSON file to the enum type, so our enum equivalence check was not
actually working, and could result in us re-allocating a TACAN channel
that was used by the map.
Fixing this problem surfaces a latent bug, where we can't actually treat
duplicate map TACAN channels as a bug because some channels are used by
multiple airports in PG.
This exports all the old AIRFIELD_DATA to yaml files. It's easier for
users to send fixes if it's defined this way, and they can also fix it
in their install without having to wait for a new release.
This also switches the indexes from the unstable DCS airfield names to
airfield IDs, so this fixes another case of DCS updates occasionally
breaking Liberation.
I also ended up finding quite a few typos in airfield names, and
incorrect theater names in the process. Those have been fixed.
* Use TACAN channels more selectively
* Increase tacan range to 126
* Use pytest and add workflow
* Skip faction tests due to outdated test data
* Run mypy on tests directory also
* Use iterators for bands AND usages, add tests
