Support autolinking the host package on `react-native-macos`

[shirakaba]

react-native-node-api/packages/host/react-native-node-api.podspec

Line 28 in 0419678

s.platforms = { :ios => min_ios_version_supported }

This should probably be something like this:

- s.platforms    = { :ios => min_ios_version_supported }
+ s.platforms    = { :ios => min_ios_version_supported, :osx => min_macos_version_supported }

[shirakaba]

Alternatively, as react-native-safe-area-context do, we could use deployment_target as mentioned by @kraenhansen:

https://github.com/AppAndFlow/react-native-safe-area-context/blob/e8b8d9370a17c22e84bab64543d7908743f5ca37/react-native-safe-area-context.podspec#L15-L16

[kraenhansen]

I believe this was fixed in #297