Add a kernel_config to calculate blocks and threads for launching kernels

kernels/CMakeLists.txt

@@ -3,12 +3,14 @@ project(${NAME}_cuda_lib CUDA CXX)
 set(HEADER_FILES
     potentials/pair_potentials.cuh
     forces.cuh
+    kernel_config.cuh
 )
 set(SOURCE_FILES
+    kernel_config.cu
 )
 
 # The library contains header and source files.
-add_library(${NAME}_cuda_lib INTERFACE
+add_library(${NAME}_cuda_lib STATIC
     ${SOURCE_FILES}
     ${HEADER_FILES}
 )