OI tank should be added

[Rowiek]

Make the O-I heavy tank a Tech-Tree vehicle when added!

The inclusion of the O-I heavy tank as a tech tree vehicle for Japan in War Thunder would be an much needed enhancement for the Japanese ground forces lineup. Currently, Japan’s tank tech tree is underrepresented in the category of heavy armor, which places it at a disadvantage compared to other major nations in the game that boast a more diverse array of heavily armored vehicles. This imbalance affects gameplay dynamics, especially in higher-tier matches where versatility in armored units is cr…