Add configuration options for serialization

**Description**
Currently lib lacks proper sorting support.

**Proposed solution**
Add configurable sorting with sensible defaults.

**Priority**: Low/Medium

Start by inspecting the serialization-related code under lib and trace where its output order is determined. Identify how configuration is currently represented and whether existing tests cover serialization; done means configurable sorting works with sensible defaults, but the issue does not specify the supported options or expected order.

Written by the indexing model from the issue text.