added hand.cpp and card.cpp in unit-test to try to make the program compile

.idea/blackjack2.iml

.idea/misc.xml

.idea/modules.xml

CMakeLists.txt

cmake-build-debug/.cmake/api/v1/query/cache-v2

cmake-build-debug/.cmake/api/v1/query/cmakeFiles-v1

cmake-build-debug/.cmake/api/v1/query/codemodel-v2

cmake-build-debug/.cmake/api/v1/query/toolchains-v1

cmake-build-debug/CMakeCache.txt

cmake-build-debug/CMakeFiles/3.16.3/CMakeCCompiler.cmake

cmake-build-debug/CMakeFiles/3.16.3/CMakeCXXCompiler.cmake

...d-debug/CMakeFiles/3.16.3/CMakeDetermineCompilerABI_C.bin

...debug/CMakeFiles/3.16.3/CMakeDetermineCompilerABI_CXX.bin

cmake-build-debug/CMakeFiles/3.16.3/CMakeSystem.cmake

...ld-debug/CMakeFiles/3.16.3/CompilerIdC/CMakeCCompilerId.c

cmake-build-debug/CMakeFiles/3.16.3/CompilerIdC/a.out

...ug/CMakeFiles/3.16.3/CompilerIdCXX/CMakeCXXCompilerId.cpp

cmake-build-debug/CMakeFiles/3.16.3/CompilerIdCXX/a.out

cmake-build-debug/CMakeFiles/3.22.3/CMakeCCompiler.cmake

cmake-build-debug/CMakeFiles/3.22.3/CMakeCXXCompiler.cmake