Create Framework for GobanView

[Abizern]

More of a question about direction rather than an Issue - I'm just checking that this is somewhere you wish for the project to go before I do the work on raising a PR request.

Currently this project just builds the Sample application with the code for the view and the parser included as part of this project. My proposal is to add a framework project to the repository that contains the view and the parser code that the sample project uses.

Eventually - move the sample project into it's own repository and refactor Goban view so that it can be used to create iOS and macOS specific Frameworks.