Operation request: Bencode

## Summary

https://en.m.wikipedia.org/wiki/Bencode

### Example Input

**Bencode Encoding Example:**

Encoded Integer: `i42e`
Encoded String: `13:Hello, Bencode!`
Encoded List: `li1ei2ei3ee`
Encoded Dictionary: `d4:agei30e4:name5:Alicee`

### Example Output

**Decoded Values:**

Decoded Integer: `42`
Decoded String: `Hello, Bencode!`
Decoded List: `[1, 2, 3]`
Decoded Dictionary: `{'age': 30, 'name': 'Alice'}`

No file, test, or entry point is identified in the issue. Start with the Bencode reference and the provided encoding and decoding examples, then locate CyberChef's operation and test conventions. Done means the requested operation handles the shown integer, string, list, and dictionary examples in both directions.

Written by the indexing model from the issue text.