Feature request: Support for other languages for encryption/encoding operations

### Summary
Add national alphabet (e.g. Russian) support to such operations as ROT, Vigenere ciphers and others.
Generally it is expansion of https://github.com/gchq/CyberChef/issues/73 feature request, but user does not need to enter a regexp, just select a language from the dropdown list.

### Example
Similar functionality is implemented here:
https://planetcalc.ru/1434/

### Possible solutions
Suggest to сreate a predefined list of ready-to-use languages (values for argument `editableOption` with regexps, i.e. `а-яА-Я` for Russian).