Feature request: Arbitrary Base Converter (Strings)

**Is your feature request related to a problem? Please describe.**
There are already converters for base64, base32, base85, etc.

**Describe the solution you'd like**
It would be nice to have a converter for fully custom alphabets. This can be a reference, as it also has many helpful default alphabets: https://convert.zamicol.com/

There could also be a `Base Brute Force` block, similar to `Text Encoding Brute Force`, which would convert the input into many default base alphabets (or maybe one could try out all bases from 2-256 for example?)

**Describe alternatives you've considered**
The `To Base` block only converts numbers.