common: disable OpenSSL engine support if it is disabled

common: disable OpenSSL engine support if it is disabled

OpenSSL 3.0 documentation recommends moving from the ENGINE API to the
Providers API. Recent distributions may compile OpenSSL without engine
support by default, necessitating more flexible configuration handling.

So, in this change:

- Add a CMake option `WITH_OPENSSL_ENGINE` to explicitly control engine support
- Respect `openssl_engine_opts` when engine support is enabled
- Provide clear error messaging when engine options are set but support is disabled

See also:
- OpenSSL 3.0 documentation:
https://wiki.openssl.org/index.php/OpenSSL_3.0#Engines_and_.22METHOD.22_APIs

Fixes: https://tracker.ceph.com/issues/68059
Signed-off-by: Kefu Chai <tchaikov@gmail.com>