qapi/crypto: Rename QCryptoCipherAlgorithm to *Algo, and drop prefix

qapi/crypto: Rename QCryptoCipherAlgorithm to *Algo, and drop prefix

QAPI's 'prefix' feature can make the connection between enumeration
type and its constants less than obvious.  It's best used with
restraint.

QCryptoCipherAlgorithm has a 'prefix' that overrides the generated
enumeration constants' prefix to QCRYPTO_CIPHER_ALG.

We could simply drop 'prefix', but then the prefix becomes
QCRYPTO_CIPHER_ALGORITHM, which is rather long.

We could additionally rename the type to QCryptoCipherAlg, but I think
the abbreviation "alg" is less than clear.

Rename the type to QCryptoCipherAlgo instead.  The prefix becomes
QCRYPTO_CIPHER_ALGO.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Acked-by: Daniel P. Berrangé <berrange@redhat.com>
Message-ID: <20240904111836.3273842-13-armbru@redhat.com>