Add FPE sample app
Adds a sample app like the existing one, for FPE testing.
pipenv run python examples/ubiq_fpe_sample.py -n "FULL_NAME" -e "Sharai Attenboro"
ENCRYPTED cipher= @;pW9c #nTr\Jg@j
pipenv run python examples/ubiq_fpe_sample.py -n "FULL_NAME" -d "@;pW9c #nTr\Jg@j"
DECRYPTED plainText= Sharai Attenboro
Allows for one-off testing in the CLI.