build: CMake refactoring

Includes:
- refactor build_lib and build_lib_example macros
    - unify src and contrib macros
    - replace macro with function not to leak definitions
    - parse list of arguments
- different cmake-format file for modules to list one item per line

src/visualizer/CMakeLists.txt

@@ -1,12 +1,11 @@
-set(name visualizer)
-
-set(source_files model/pyviz.cc model/visual-simulator-impl.cc)
-
-set(header_files model/pyviz.h)
-
 include_directories(${Python_INCLUDE_DIRS})
 
-set(libraries_to_link
+build_lib(
+  LIBNAME visualizer
+  SOURCE_FILES model/pyviz.cc
+               model/visual-simulator-impl.cc
+  HEADER_FILES model/pyviz.h
+  LIBRARIES_TO_LINK
     ${Python_LIBRARIES}
     ${libcore}
     ${libinternet}
@@ -19,19 +18,26 @@ set(libraries_to_link
     ${libmesh}
 )
 
-set(test_sources)
-
-build_lib("${name}" "${source_files}" "${header_files}" "${libraries_to_link}"
-          "${test_sources}"
-)
-
 # move visualizer folder to build/bindings/python, which allows us to add only
 # PYTHONPATH=ns-3-dev/build/bindings/python
-file(GLOB_RECURSE visualizer_files ${CMAKE_CURRENT_SOURCE_DIR}/visualizer/*)
-foreach(file ${visualizer_files})
-  string(REPLACE "${CMAKE_CURRENT_SOURCE_DIR}"
-                 "${CMAKE_OUTPUT_DIRECTORY}/bindings/python" destination
-                 ${file}
+file(
+  GLOB_RECURSE
+  visualizer_files
+  ${CMAKE_CURRENT_SOURCE_DIR}/visualizer/*
+)
+foreach(
+  file
+  ${visualizer_files}
+)
+  string(
+    REPLACE "${CMAKE_CURRENT_SOURCE_DIR}"
+            "${CMAKE_OUTPUT_DIRECTORY}/bindings/python"
+            destination
+            ${file}
+  )
+  configure_file(
+    ${file}
+    ${destination}
+    COPYONLY
   )
-  configure_file(${file} ${destination} COPYONLY)
 endforeach()