Content creation toolset

Summary
Additional content creation and management tools will be delivered, including speech creation & management tools that improve natural (as opposed to synthetic) speech integration support in skills. In addition, the face modeling toolchain will be extended in order to enable more fluid & automated integration between the different steps in the process, specifically enabling previews of new Furhat faces, speeding up the face creation process & opening it up to 3rd party developers. Finally, a component/package architecture will be designed in order to increase the extent to which logic & content can be shared across different skills, promoting reuse & reducing development time.