[Feature Request]: Create a construct of the SSH Key Module that can also generate the key

[AlexanderSehr]

Description

By default, the SSH Key resource does not generate an SSH Key.

Instead you need to invoke a REST call once the resource was created.

To this end it would be nice to have a construct that uses our module (or without) and has the following extras:

• If a user provides a MSI, the module also deploys a deployment script that invokes the SSH Key Generation
• If a user provide a Key Vault reference, the module also stores the generated private key in that Key Vault