My Port of Lox using Python for Chapters 4-7

Will most likely never port the rest of the second half of the book - I'm most interested in redoing the lang in C but wanted to play around with the scanner, parser, and eval. Also, it doesn't actually even work as eval properly.

To run prompt

uv run src/lox.py

to exit prompt

This is using the Python's built in input function so an empty string will end the eval loop. Keywords like exit() are not implemented.