List application/service principal secret

Is your feature request related to a problem? Please describe.
For Azure resources we have the capability get secrets from some services via list functions (https://learn.microsoft.com/en-us/azure/azure-resource-manager/bicep/bicep-functions-resource#list) or getSecret (https://learn.microsoft.com/en-us/azure/azure-resource-manager/bicep/bicep-functions-resource#getsecret) for Key Vault secrets. As far as I understand there is no such option for Entra applications and service principals.
There are still a lot of Azure services that require application and secret in order to configure something. One such example is credential provider for Azure APIM https://learn.microsoft.com/en-us/azure/api-management/credentials-how-to-azure-ad but of course there are many other. Of course the APIM option is in that format so it can allow external Entra tenants to the APIM instance but in Bicep would be good if you can pull the secret directly by referencing the application, instead of getting the secret value and storing it in Key Vault and pulling it from there. I do not know if this is possible as there might not be the option to pull secret at all from Application besides the first time it is being created. Is there possibility such option to be added? Other method would be to be able to create secrets from Bicep to Entra applications. In such scenarios we should be able to create the secret by specifying its value. We could pull the value from Key Vault so we can add the secret to the application/service principal.

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Start by reviewing the repository's Microsoft Graph resource type definitions and the Azure/Bicep support relevant to Entra applications and service principals. Determine whether secret values can be listed or created through the available Graph operations, then define the supported resource behavior and validation needed for the requested scenarios.