add CMakeLists.txt to cpp dir

1 job for adi-dev in 22 seconds
Status Job ID Name Coverage
  Linux
failed #781895
TestJobLinux

00:00:22

 
Name Stage Failure
failed
TestJobLinux Linux
  Cannot specify include directories for target "PUBLIC" which is not built
by this project.


-- Found Armadillo: /usr/include
-- Configuring incomplete, errors occurred!
See also "/builds/monticore/EmbeddedMontiArc/applications/balltracking/build/CMakeFiles/CMakeOutput.log".
make: *** No targets specified and no makefile found. Stop.
ERROR: Job failed: exit code 1