Allow for configuring the weight orderin (DX)

Problem/Motivation

Drupal standard UI lists the interface from left to right.
Once we configure this to be correct, the roles table usually gets flipped.

Why not use the normal Drupal ordering to be the correct one.
Or have a setting to invert the weight ordering in configuration, so we can keep the normal ordering of roles.

Proposed resolution

Invert the ordering of the weights so standard Drual hierarchy is used by default

Remaining tasks

Patch.

User interface changes

Setting for the module's configuration.

API changes

None expected.

Data model changes

None expected.

Release notes snippet

TBD.