Decoder resolution performance optimizations

This refactors decoder functionality to reduce calls to
OSSL_DECODER_is_a / EVP_KEYMGMT_is_a, which are substantial bottlenecks
in the performance of repeated decode operations (see #15199).

Reviewed-by: Matt Caswell <matt@openssl.org>
Reviewed-by: Richard Levitte <levitte@openssl.org>
Reviewed-by: Paul Dale <pauli@openssl.org>
Reviewed-by: Tomas Mraz <tomas@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/17921)

0 files changed, 0 insertions, 0 deletions