Add limit suffixes

[davepl]

Add limit suffixes

Allows the user to specify shortcuts like K, M, G, and T with the -l (limit) flag

• I read the contribution guidelines in CONTRIBUTING.md.
• I placed my solution in the correct solution folder.
• I added a README.md with the right badge(s).
• I added a Dockerfile that builds and runs my solution.
• I selected drag-race as the target branch.
• All code herein is licensed compatible with BSD-3.

[rbergen]

LGTM!

I see you changed the curly bracket placement for a number of function blocks to ANSI, and then add a custom atoll() in K&R style. I was just curious if there is a specific reason for this?