Adopt compiler flags for MSVC

Add a branch for MSVC compiler flags in tests\CMakeLists.txt

Author: Mahno9

tests/CMakeLists.txt

@@ -5,7 +5,11 @@ set(CTEST_CUSTOM_TESTS_IGNORE pkg-config--static)
 
 # Executable
 add_executable(raylib_test raylib_test.cpp)
-target_compile_options(raylib_test PRIVATE -Wall -Wextra -Wconversion -Wsign-conversion)
+if (MSVC)
+    target_compile_options(raylib_test PRIVATE /Wall /W4)
+else()
+    target_compile_options(raylib_test PRIVATE -Wall -Wextra -Wconversion -Wsign-conversion)
+endif()
 target_link_libraries(raylib_test raylib-cpp raylib)
 
 # Test