DESERIALIZER: Implement decryption of password protected objects

DESERIALIZER: Implement decryption of password protected objects

This implements these functions:

OSSL_DESERIALIZER_CTX_set_cipher()
OSSL_DESERIALIZER_CTX_set_passphrase()
OSSL_DESERIALIZER_CTX_set_passphrase_ui()
OSSL_DESERIALIZER_CTX_set_passphrase_cb()

To be able to deal with multiple deserializers trying to work on the
same byte array and wanting to decrypt it while doing so, the
deserializer caches the passphrase.  This cache is cleared at the end
of OSSL_DESERIALIZER_from_bio().

Reviewed-by: Matt Caswell <matt@openssl.org>
Reviewed-by: Shane Lontis <shane.lontis@oracle.com>
(Merged from https://github.com/openssl/openssl/pull/12410)