Add the Roundels and insignias of the "Vietnam People's Air Force"

Currently, there are Roundels and insignia of the Chinese and Korean air forces, so on behalf of the Vietnamese community in Warthunder, we hope the publisher will add Roundels and insignia of the “Vietnam People’s Air Force” to the game

Here the Vietnam People’s Air Force roundel is shown

In the Su-30MK2

In the MiG-21

In the MiG-17