Annotated provisioning

To simplify the initial V.2 version, the DI implementation has be removed so it could be refactored and extended later. It is still available in the branch #22-annotations

Next to the declarative approach, Java annotations are available for the configuration of I/O provisioning instead of the hard-coded approach offered in V.1.

This implementation still needs to be further fine-tuned and unified somehow to make things cleaner and more straightforward, but would provide a way to initialize a I/O for instance like this:

@Name("My Digital Input Pin")
@Debounce(300000) // microseconds
private DigitalInput input;