Add Support for PSDesiredStateConfiguration in Azure Function PS Worker

We are working on a proof-of-concept that would require testing a Microsoft365DSC configuration from an Azure Function. We would like to request that the PSDesiredStateConfiguration module be added to the PS worker to allow us to run Test-DSCConfiguration from within the context of an Azure function. This would enable numerous new scenarios for our clients to be able to leverage Cloud Configuration Managements in an "agentless" fashion.

Start by inspecting how the PowerShell worker packages or exposes modules for Azure Functions, then trace the existing worker setup for dependencies. Confirm how PSDesiredStateConfiguration and Test-DSCConfiguration must be available in the function context; done means the module is usable from the worker for the requested DSC scenario and the relevant validation passes.

Written by the indexing model from the issue text.