Return reference from interaction service methods

### Is there an existing issue for this?

- [x] I have searched the existing issues

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

IInteractionService methods like PromptInputsAsync return a task that is completed with the result. There maybe scenarios where it's useful to have a reference to the interaction prompt before the result is returned.

### Describe the solution you'd like

`Task> PromptInputsAsync(...)` could be changed to `Interaction PromptInputs(...)`

And `Interaction` looks like this:

```cs
public sealed class Interaction
{
public Task> GetResultAsync()
public void Cancel()
public TaskAwaiter GetAwaiter()
public ConfiguredTaskAwaitable ConfigureAwait(bool continueOnCapturedContext)
}
```

Other methods would follow a similar pattern.

### Additional context

_No response_