Move cloudstateio/cloudstate/go-support into this repository

[marcellanz]

According to cloudstateio/cloudstate#103 (comment)

• close PR 103 and link it for reference in a new PR in this repository
• build it on travis-ci =>
• the CloudState Go Language Documentation should remain in the main CloudState repository
  • ready for PR as soon as this issue is resoved https://github.com/marcellanz/cloudstate/tree/feature/go-support_go_paradox_doc
• separate cloudstateio/cloudstate/go-support into its own repository

[marcellanz]

work in progress goes on in: https://github.com/marcellanz/go-support/tree/feature/go-support

[viktorklang]

Good stuff, @marcellanz! @jroper is on a break, but let me know what you need and I'll do my best to assist!

[marcellanz]

I think I'm good for the time @viktorklang. I can work on the tasks mentioned in the Issue and until I PR I think I need nothing yet from yours. Thank you.

[viktorklang]

Awesome, thanks @marcellanz! :)

[marcellanz]

Input from the Weekly Call, 2019-10-01:

• provide/publish a docker image for the TCK to be running on its own TCK run => Provide the TCK Shopping Cart Example implemented in Go as a Docker Image #2
  "tell" the TCK where to find them
• the CloudState protocol with its protobufs can be provided to language support libs as a versioned artefact. possibly a ZIP file. Language implementations then can decide how to distribute them with their releases => see Depending on CloudState Protocols in Language Supports cloudstate#118
• try to reduce source code included in the documentation, but what is there should be automatically verified

[marcellanz]

Tasks left from this issues where moved to separate issues #2, #3 and #4.

[marcellanz]

done