Add linux, build 3 platforms same time
Add linux, build 3 platforms same time

Sygmei/ObEngine,Mizugola/MeltingSaga,Mizugola/ObEngine,Mizugola/MeltingSaga,Sygmei/ObEngine,Mizugola/MeltingSagaEngine,Mizugola/ObEngine,Mizugola/MeltingSagaEngine