APS: identify line-primary, line-secondary and common ports with a reference to their related port component

[Djib84]

The active-path leaf of aps-module (openconfig-transport-line-protection) indicates if the active path is the primary path or the secondary path. But it is not possible to identify which port component is the primary or the secondary one.
So I’d like to propose adding a new state leaf to each port defined in aps-module that would be a reference to the related component of PORT type. Here below in yellow is the proposal for the new leaf for line-primary-in port:

Same proposal for the 5 other ports of aps-module:
• line-primary-out,
• line-secondary-in
• line-secondary-out
• common-in
• common-output.

This proposal only considers a state leaf because the primary and secondary paths are typically defined (fixed) by the internal model of the WDM equipment