AffinidiSDK: VC Vault - encrypted user controlled VC storage

Where we could store a VC? Sure we could use an edge device, but sometimes we want to have external storage - as a backup - as storage that has a bigger capacity than the device Job zero for this storage - security Job #1 - user control Lets take a look at what we have Follow notebook: https://github.com/Volland/sdk-notebooks/blob/master/credential-storage.ipynb