Turn template into dataengine project.

CMakeLists.txt

README

src/CMakeLists.txt

src/main.cpp

src/org.example.simplecastengine.appdata.xml

src/org.example.simplecastengine.desktop

src/plasma_dataengine_simplecastengine.desktop

src/simplecastengine.cpp

src/simplecastengine.h

src/simplecastengine.ui