cmake VPX examples

ZDoom/Raze CMakeLists.txt :227 

find_package( VPX )

dpjudas/VkDoom CMakeLists.txt :194 

find_package( VPX )

H-uru/Plasma CMakeLists.txt :128 

find_package(VPX)

glKarin/com.n0n3m4.diii4a Q3E/src/main/jni/gzdoom/CMakeLists.txt :246 

find_package( VPX )