Add and apply clang-tidy

.clang-tidy

Makefile

apps/Main.cpp

apps/WorkerSleepExample.cpp

emper/Actor.hpp

emper/BinaryPrivateSemaphore.cpp

emper/BinaryPrivateSemaphore.hpp

emper/Blockable.hpp

emper/Common.hpp

emper/Context.cpp

emper/Context.hpp

emper/ContextManager.cpp

emper/ContextManager.hpp

emper/CountingPrivateSemaphore.cpp

emper/CountingPrivateSemaphore.hpp

emper/Debug.hpp

emper/Dispatcher.cpp

emper/Dispatcher.hpp

emper/Fiber.cpp

emper/Fiber.hpp