[MISC] Migrate raw pointers / legacy types to std:: types

[nitoygo]

Issue:
Lots of raw pointers, legacy data types that are not safe / catchable in runtime.

Solution:
Slowly migrate everything to std::
-BYTE* to span std::byte
-own implementation of list/queues/trees to std::vector std::deque etc
-raw pointers to smart pointers

This is a huge undertaking, but, I think it would be worth it for maintainability and less headaches with memory leak