Write a command line python script sponge_cli.py with the following usage :

python3 sponge_cli.py --text <my sentence>

This script should convert <my sentence> to a spongebob version (eg. "military grade encryption" => "MILItARy GrAde EncryptiON") and print it.

To convert the sentence, every letter has a 50% chance of being converted to uppercase.