Sourcery poc

[joesus]

Checklist

• I've read the Contributing Guidelines and the Code of Conduct
• I've completed the Contributor License Agreement
• I've ensured that all existing tests pass and added tests (when/where necessary)
• I've ensured that my code lints properly: (swiftlint && swiftlint autocorrect --format)
• I've updated the documentation (when/where necessary) and Changelog (when/where necessary)
• I've added the proper label to this pull request (e.g. bug for bug fixes)

Pull Request Details

Initial steps at using Sourcery and Stencil to generate code that will play nice with ObjC.

What this is:

• instantiating wrapper classes for structs and enums
• instantiating wrapper classes for classes since they may contain properties that do not work with ObjC
• setting up pass-through properties
• a few dummy classes for experimenting with the stencil templates

What this is not:

• fully implemented

What is missing:

• methods
• complex types such as generics
• unit testing wrapper classes

[codytwinton]

Couple changes required

[codytwinton]

https://github.com/github/linguist#generated-code

Suggested change

	./Sourcery/Generated/* linguis-generated
	Sourcery/Generated/* linguist-generated=true

[codytwinton]

Suggested change

	- ./Sourcery/Templates
	- ./Codegen/Templates

[codytwinton]

Suggested change

	./Sourcery/Generated
	./Codegen/Generated

[joesus]

@codytwinton - Let me know when this looks ready to merge and I'll do a sweep and remove the dummy project and files. Left them in there to make it easier to review but they should not be included. 👍