Feature request: Implement Series of Classical Ciphers

**Is your feature request related to a problem? Please describe.**
Many classical ciphers aren’t supported yet. I was asked to analyze several of them the other day (along with some I people I knew), and it would be really helpful to have them all in one place instead of manually stitching functions together from different sources.

**Describe the solution you'd like**
Here is a list me and my partners compiled that could be supported in the future.
1. Playfair
2. Hill
3. Trifid
4. Four-square
5. Nihilist
6. ADFGX
7. ADFGVX
8. Beaufort
9. Vigenere Autokey
10. Porta
11. Chaocipher
12. Solitaire/Pontifex
13. Homophonic substitution
14. Straddling checkerboard
15. Myszkowski transposition
16. VIC cipher

**Describe alternatives you've considered**
Manually chaining different cipher functions through different webs and sources.

**Additional context**
I am a semi-hobbyist + learner, I do not have much time to explore or implement a solution myself. This is one of my favorite tools that helped me achieved some of my milestones and goals. It would also be great if there is a separate category for Classical Ciphers in this case to help organize and separate known modern cryptography and pre-modern ciphers. Thank you!

No file, test, or entry point is named. Start by reviewing how existing cipher operations are organized, then clarify which of the 16 listed ciphers and whether a separate Classical Ciphers category are in scope. Done means the agreed cipher support and organization are implemented and verified against the project's existing expectations.

Written by the indexing model from the issue text.