Support of HMS for Azure Key Vault

[AndreiVidrasco]

Hi. For the project I'm working on, I need keys create from Quorum, to use Hardware Security Module in Azure Key Vault.
From my brief research, it looks like it was intentionally disabled.
Is there any reason for that and would it be possible to enable it?
Also migration of existing keys to HMS would be highly appreciated as well.

Useful links:
https://learn.microsoft.com/en-us/azure/key-vault/managed-hsm/overview

Quorum has hardcoded value of kty(key type) to EC
https://github.com/ConsenSys/quorum-key-manager/blob/9beac6fb15a5b5be7423fd2b1a789bcb6d845488/src/stores/store/keys/akv/akv.go#L46

For HMS, we need to set EC-HSM(for example):
https://learn.microsoft.com/en-us/rest/api/keyvault/keys/create-key/create-key?tabs=HTTP#jsonwebkeytype