Document that components are now bundled with the genrated project.

Instead of fetching the components using git we bundle them in Dependecies.

This requires documentation.

The CMake project now contains a folder called Dependecies that contains the Qt Design Studio specific dependecies from https://codereview.qt-project.org/q/project:qt-labs/qtquickdesigner-components. These are Qt Design Studio specific QML components like the Studio Components containing the ArcItem for example the Design Effects.