Add common compiler flags on windows

CMakeLists.txt

@@ -218,6 +218,8 @@ target_link_libraries(matrix_client
 
 if(NOT MSVC AND NOT APPLE)
 	target_link_libraries(matrix_client PUBLIC Threads::Threads)
+elseif(MSVC)
+	target_compile_options(matrix_client PUBLIC /Zc:__cplusplus /utf-8 /MP /Gm- /EHsc)
 endif()
 
 if(COVERAGE)