add carthage&cocoapods installation validation to ci

[luoxiu]

[hitsthings]

Looks like the CocoaPods for this is only the 0.1.1 version. I tried to use the GitHub repo with

pod 'CombineX', :git => 'https://github.com/cx-org/CombineX.git', :branch => '0.3.0'

But I got issues where Locking.swift in CXUtility couldn't find CXLibc.

I'm too much of a newb to know how to work around this. I'm using React Native and I'm also too much of a newb to get Swift Package Manager working with React Native.

Thanks for the library though! Wish I could use it. :)

[ddddxxx]

@hitsthings CocoaPods integration issue is tracked at #112