kern: implement KSchedulerLock

libraries/libvapours/include/vapours/util.hpp

@@ -23,6 +23,7 @@
 #include "util/util_bitpack.hpp"
 #include "util/util_bitset.hpp"
 #include "util/util_scope_guard.hpp"
+#include "util/util_specialization_of.hpp"
 #include "util/util_typed_storage.hpp"
 #include "util/util_intrusive_list.hpp"
 #include "util/util_intrusive_red_black_tree.hpp"