Better switch to unified logging system

[technusm1]

Refer: https://developer.apple.com/documentation/os/logging

TODO: Eliminate print statements that I wrote as a swift-noob and replace them with unified logging.
REPLACEMENTS: Since the minimum target is Big Sur 11.3, I think its better to make use of this new Logging feature. Better log collection support and other error handling benefits right from the OS itself, in case its ever needed.