Add the Arc4 PRNG draft implementation

ChaosTests/CMakeLists.txt

@@ -13,7 +13,8 @@ FetchContent_MakeAvailable(googletest)
 
 set(ChaosTests_SOURCE Hash/Md4HasherTests.cpp
                       Hash/Md5HasherTests.cpp
-                      Mac/HmacTests.cpp)
+                      Mac/HmacTests.cpp
+                      Cipher/Arc4Tests.cpp)
 
 add_executable(ChaosTests ${ChaosTests_SOURCE})
 target_link_libraries(ChaosTests gtest gtest_main)