Customize CMakeLists.txt to fit opm-benchmarks

* Give correct module name, description and version number
* Include opm-upscaling as a dependency
Copy cmake directory from opm-upscaling

No need for changes in these files to fit opm-benchmarks
Remove Makefiles
Remove further remnants of the Autotools build system
Add CMakeLists_files.cmake

File is copied from opm-upscaling and then modified to fit opm-benchmarks
Add file CTestConfig.cmake

Copied from opm-upscaling