I had the exact same configuration as yours and this is what I did:
I used the LIB utility of visual studio to put all .obj files into a .lib library, and then I could make my gtest project link to it.
Putting the command
lib /NOLOGO /OUT:"$(TargetPath).lib" "$(ProjectDir)\$(Configuration)\*.obj"
into the "Build events"/"Post-build Event" of your main project, you can keep your console application as a .exe and in the same time aggregate all your obj files to an up-to-date lib.
Hope it helps!
By the way, this problem is a bit similar to this post: Linker error - linking two "application" type projects in order to use Google Test and I think it could be usefull to link it here.