Add CMake project template for a Qt applications

Qt Creator supports CMake-based projects for a long time now. One thing I find perplexing is the fact that the project wizard still offers just a plain CMake project and there is no template for Qt CMake-projects.

Recent versions of CMake provide easy development of Qt application using the CMake modules that are provided. There is even a tutorial in Qt's documentation on this.

I and from what I've seen on Stackoverflow many others often have to deal with integrating some library (build using CMake) with Qt. While yes, many users can find the required information to create a CMake project that uses Qt, it will be nice to have this already at our disposal when launching Qt Creator and selecting a project template through the project wizard.

I can provide one if anyone wants it.