Renamed the `ResultHeader` and `ResultBody` properties to `Header`
and `Body` in both `CreateOutResCommand` and `OutRes` classes
to improve naming consistency. Default values and database
column mappings remain unchanged.
Introduced the `CreateOutResCommand` class in the `ReC.Application.OutResults.Commands` namespace. This class includes properties for managing output results, such as `ActionId`, `ResultHeader`, `ResultBody`, and `AddedWho`. Added a static readonly `EmptyJson` property for initializing JSON fields with a serialized empty object. Included `System.Text.Json` for JSON serialization functionality.
