Implement PKCS11 KMIP operations

[Manuthor]

There are several usage patterns in the context of a KMS:

• Passthrough mode — direct communication with the HSM via KMIP; the KMS simply acts as a proxy.
• Storage layer mode — KMIP objects are stored directly in the HSM.
• Hybrid client mode — provides a PKCS#11 interface built on top of KMIP, allowing legacy clients to continue working without migrating to KMIP.

[bgrieder]

Hybrid client mode — provides a PKCS#11 interface built on top of KMIP, allowing legacy clients to continue working without migrating to KMIP.

We already have a PKCS#11 lib/driver, that calls the KMS using KMIP 2.1. This driver can be improved with better coverage of PKCS#11.

I do not see any point in implementing the PKCS#11 KMIP operation described here: https://docs.oasis-open.org/kmip/kmip-spec/v2.1/kmip-spec-v2.1.html#_Toc57115669