C++ Header bits stdc++

[@LuongToKim]

Finally, no more separate includes! Thank you for this!

[@BangBang-Av2]

This header saves me so much time on small projects!

[@LongLưuEllis]

So all-in-one import for C++? Yes, please!

[@chuhuonggbLBG]

Best hack for lazy coders like me 😂