Historical skins for the "Normandie-Niemen" squadron. addon

Features of the addon:

1) The addon adds historical skins to the game for Yak fighters and the Normandie-Niemen squadron.
2) Since the main combat work of the squadron began in mid-1943, the fighters were given camouflage in accordance with the requirements of the People's Commissariat of the Aviation Industry (abbreviated as NKAP) of July 1943.
3) Changed camouflage has been added to the following fighter models - Yak-1b, Yak-9, Yak-9D, Yak-9T, Yak-3.
4) Skins from the aviaskins website were taken as a basis and partially modified.
5) For ease of installation/removal, the add-on is made as a separate mod, and not just a set of skins for the PaintSchemes folder.