Added the `ModeAwareResource` interface

this allows resources to get notified about the mode they are running
in. Either IN, OUT or CHECK.

Resources can now return different objects for `params` and more, to
allow usecases where there are some parts only required in a specific
step.

InResource: added missing `Params` handler

version 0.0.3

version 0.0.2

version 0.0.1