Misc. Preliminaries

[hentai-chan]

There're still a few things to do before the main components can be completed:

• implement an assets manager that reliably retrieves the assets/ directory (See also env.*pp in the scribbles repository as an example for this)
• write a check function that is called at the top of the main function to ensure that all data has been generated by gen_data.py before the game starts, else 1) prematurely close the application or 2) run the script with two default arguments from main.cpp (your choice)
• write a function that loads the ASCII art and print it to the screen
• embedded djson to the project and test that it works

[hentai-chan]

TODO: Add a create_manifest function in the python script and make creating assets easier (single invocation)