added missing compilation file

meson.build

@@ -48,6 +48,8 @@ src = [
     'src/users/user_feedback.hpp',
     'src/users/dynscheduler.cpp',
     'src/users/dynscheduler.hpp',
+    'src/users/log_user_stat.cpp',
+    'src/users/log_user_stat.hpp',
     'src/decision.cpp',
     'src/decision.hpp',
     'src/exact_numbers.hpp',