Feature request: Rot N Bruteforce needs pass-through

**Is your feature request related to a problem? Please describe.**
When chaining together brute-force operations, like Rot-N reverse, or ROT-N Atbash etc, it's not uncommon that the solution you are looking for doesn't require the operation you are chaining, and thus it's easy to miss a solution that pops up.

**Describe the solution you'd like**
I'd like to see (in the case of Rot-13 bruteforcing) that Amount = 0 or Amount = 26 is added, so a 'no-op' can be passed through to further processing.

**Describe alternatives you've considered**
The alternative, would be an option in Cyber Chef itself, that *appends* the input to the output, every time a step is added.

**Additional context**
Add any other context or screenshots about the feature request here.