I don't see any IDE field (I'm on PC) allowing post-build commands in an extension, so the answer for "to include" is probably no?
That said, by checking "suppress build and run" in iOS platform settings we can build an .xcodeproj, so theoretically one way to hack it is to have some kind of post-processing daemon running on the Mac OS side to handle the CocoaPods part.
I'd personally love to see command-line build tools built into GMS2; before that happens I'd be handling it all manually.