Logging Cleanup

replaced all the random std::cout / std::cerr calls scattered throughout the project with an actual logging system

logging

implemented a proper logging system.

• replaced std::cout / std::cerr throughout the engine
• added support for different log levels
• optional logging to a log file
• centralized all engine logging into one place
• thread safe !!!!

nothing particularly flashy or fancy, but its cleaner, easier to work with, and generally just nice

i probably should’ve done this a long time ago :)