Draft: use cmake to build, test, and install

Use CMake to build, test, and install the library.

See the instructions in README.md for how to make use of the new feature.

It would be good to make a release of the cudawrappers package, so we can use a released version instead of the tests branch.

cmake/Utils.cmake

+# Make it possible to #include cuda source code
+function(include_cuda_code target input_file)
+  # Save file containing cuda code as a C++ raw string literal
+  file(READ ${input_file} content)
+  set(delim "for_c++_include")
+  set(content "R\"${delim}(\n${content})${delim}\"")
+  set(output_file "${CMAKE_CURRENT_BINARY_DIR}/${input_file}")
+  file(WRITE ${output_file} "${content}")
+  # Add save path to the include directories
+  get_filename_component(output_subdir ${input_file} DIRECTORY)
+  target_include_directories(
+    ${target} PRIVATE "${CMAKE_CURRENT_BINARY_DIR}/${output_subdir}")
+endfunction(include_cuda_code)