Use Typed Context for all Tasks

Currently, Cake.Recipe makes use of a static BuildParameters class to hold of the build time information.

Cake now has the concept of Typed Contexts, which makes it possible to create an instance of a class, which all tasks have access to, rather than having a static class instance.

Cake.Recipe should switch to using this where possible. It already has a partial implementation of this, but it would be good to completely remove the BuildParameters class.

Start by locating the static BuildParameters class and the existing partial Typed Context implementation in Cake.Recipe. Trace how build-time information is accessed across the tasks, then verify that the remaining BuildParameters references have been removed and the tasks still receive the required context.

Written by the indexing model from the issue text.