cmake: Add cpp samples

ortools/linear_solver/samples/CMakeLists.txt

@@ -1,25 +1,26 @@
 if(NOT BUILD_SAMPLES)
-	return()
+  return()
 endif()
 
 if(BUILD_CXX)
   if(APPLE)
     set(CMAKE_INSTALL_RPATH
-      "@loader_path/../${CMAKE_INSTALL_LIBDIR};@loader_path")
+        "@loader_path/../${CMAKE_INSTALL_LIBDIR};@loader_path")
   elseif(UNIX)
     set(CMAKE_INSTALL_RPATH "$ORIGIN/../${CMAKE_INSTALL_LIBDIR}:$ORIGIN")
   endif()
 
   include(GNUInstallDirs)
-  foreach(EXECUTABLE IN ITEMS
-      assignment_mip
-      bin_packing_mip
-      integer_programming_example
-      linear_programming_example
-      mip_var_array
-      multiple_knapsack_mip
-      simple_lp_program
-      simple_mip_program)
+  foreach(
+    EXECUTABLE IN
+    ITEMS assignment_mip
+          bin_packing_mip
+          integer_programming_example
+          linear_programming_example
+          mip_var_array
+          multiple_knapsack_mip
+          simple_lp_program
+          simple_mip_program)
     add_executable(${EXECUTABLE} ${EXECUTABLE}.cc)
     target_include_directories(${EXECUTABLE} PUBLIC ${CMAKE_CURRENT_SOURCE_DIR})
     target_compile_features(${EXECUTABLE} PRIVATE cxx_std_17)
@@ -29,10 +30,13 @@ if(BUILD_CXX)
 endif()
 
 if(BUILD_PYTHON)
+
 endif()
 
 if(BUILD_JAVA)
+
 endif()
 
 if(BUILD_DOTNET)
+
 endif()