Add a version of Invictus to CK3 (post-AUH) province mappings for Invictus 1.7 #2799
Description
Would help with an ongoing mega campaign: https://forum.paradoxplaza.com/forum/threads/imperator-to-ck3-release-thread.1415172/post-30823371
The converter already reads all the versions from a province mapping file, just doesn't currently expect more than one. So I'll need to add code for recognizing the Invictus version and picking the best province mappings version for it.
The mappings for Invictus 1.7 can be fully automapped once we have triangulation point pairs between Invictus and post-AUH CK3.