[Question] Programmatic API

Can we use `evillimter` programmatically?
Here's how the code might looks like:
```python
import evillimiter as el
el.add('192.168.1.55') # ID:0
el.block(0)
input('Press Enter to free all hosts and exit ...')
el.free('all')
print('Bye.')
```

The issue provides a proposed Python usage example but names no files, tests, or entry points. First inspect the existing command interface and implementation to determine whether a supported programmatic API exists, then define the public behavior and verification needed for the example to work.

Written by the indexing model from the issue text.