Cachetoolsutils

Collect tests (contains) stats.
Add _PyPy 3.11_, _Python 3.13t_ and _Python 3.14t_ to GitHub CI.
Improve documentation.

As of 2025-03-07 freethreaded is a pain because `cryptography` does not install, thus only partial testing is enabled.
The dependency comes from `pycryptodome` _and_ `types-redis`.

Add `AutoPrefixedCache`.
Update doc action versions.

Allow to change the cipher within _Salsa20_, _AES-128-CBC_ and _ChaCha20_.

Add optional integrity check to `EncryptedCache`.
Code cleanup.
Reorder memcached serialization formats.

Add `full_hash_key` function.
Add `EncryptedCache`, `ToBytesCache` and `BytesCache`.

Add `opts` to provide additional parameters to cached when wrapping methods
and functions.