Query the list of available Azure subscriptions during provisioning prompting

[eerhardt]

• I have searched the existing issues

Is your feature request related to a problem? Please describe the problem.

In the context of the discussion in PR #10038 (#10038), it was suggested that we should query and display the list of Azure subscriptions available to the user as part of the provisioning user experience. Currently, users may have to manually enter their subscription, which can be cumbersome.

Describe the solution you'd like

Implement functionality to retrieve the list of Azure subscriptions available to the user and present them in the UI as part of the provisioning flow. This would enhance usability by allowing users to select from their subscriptions, reducing friction and possible errors.

Additional context

Feature requested based on PR conversation: #10038

We may need to wait for Support InteractionInput.InputType with both freeform and suggested choices (useful for Azure Subscriptions) (dotnet/aspire#10343) in order to do this.

[davidfowl]

#10343 is done. @JamesNK It would be good to dogfood the new interaction input mode here.

[davidfowl]

We'll need dependent inputs to implement subscriptions -> azure region selection nice. Ideally we'd being this PR back #10985 once those 2 fixes are made.

cc @captainsafia

[JamesNK]

I'm working on dependent inputs now. It's tricky to make everything automagically work 😄

Hold off looking at this until dependent inputs are in.

[davidfowl]

No problem 😄