feat: Optionally display codes in pairs rather than 2 sets of 3

[cheecheeo]

Feature description

Create an option that allows users to display codes in pairs instead of in sets of 3:

For example, the current behavior displays the code: 293488 as 293 488. It'd be nice to have an option to display this as 29 34 88. Memorizing, even for a short term or for communication (at least in English) it's easier to think of "twenty nine", "thirty four" "eighty eight" rather than "two hundred ninety three" "four hundred eighty eight".

Thank you for the great app!

Motivation

Ease of memorization and communication.

Acknowledgements

• This issue is not a duplicate of an existing feature request.
• I have chosen an appropriate title.
• All requested information has been provided properly.

[lwtassma]

I think 🤔 people wouldn't have that interest in memorizing, most of them prefer copy and paste.