#[saga_workflow]Expand description
Defines the workflow for a saga using an enum
Generates step vector construction from enum variants.
Each enum variant corresponds to a step struct (e.g., ValidateIndex ->
ValidateIndexStep).
§Example
ⓘ
#[saga_workflow(RebalancingSaga)]
enum RebalancingWorkflow {
ValidateIndex,
FetchBalances,
ExecuteTrades,
UpdateBalances,
EmitCompletionEvent,
}