Add missing iOS targets to Koin module.

[kpgalligan]

I think we also want to add windows and maybe the other linux target, but it'll depend on what Koin supports:

    mingwX64()
    mingwX86()

    linuxMips32()

[samhill303]

TODO, check if Koin now supports these targets and add them back in if it does https://github.com/touchlab/Kermit/pull/253/files#diff-5f914a9c84f405fe678c05ee3c6bc257de95801cb985627e26fd6f579966c09cR48