Feature request: a1z26 cipher. Add custom delimeter.

**Is your feature request related to a problem? Please describe.**
Some certain CTFs utilize a space to delimit words and "-" to delimit between letters. Maybe add some code to let the person to select the delimeter and to ignore all other non-numeric digits.
**Describe the solution you'd like**
User selects custom mode(or at least let me choose the delimeter).

**Describe alternatives you've considered**
I've already wrote some JS code to do just this, and of course some python to also do it so that I don't have to rely on cyberchef to do this for me.
**Additional context**
Add any other context or screenshots about the feature request here.
Maybe let the cipher utilize the delimeter for the letters and then have space default to the delimeter for words?