Add zip command to makefile

[darksoup319]

Task: > Update the Makefile to include a new rule that generates the required .zip file for academic submission.

Why: > Standard zip format is helpful for professors. Automating this in the Makefile ensures we don't accidentally miss any required files or include unnecessary build artifacts when we submit.

Requirements:

Create a new zip target.

The output file needs to be named SUBMIT-ME.zip.

It must include: All files in or below the directory of the Makefile.