Add scoped Valhalla settings management

[roncodes]

Summary

• add dedicated admin and organization settings components for Valhalla
• wire the new settings surfaces into the addon and app re-export layer
• add scoped server-side settings endpoints and config resolution for Valhalla

Changes

• add admin/valhalla-settings and organization/valhalla-settings components
• register organization save-task support so Valhalla settings persist through the existing settings workflow
• extend the Valhalla service and extension wiring to work with the new scoped configuration flow
• add backend controller, utils, support, config, and route updates for admin and organization Valhalla settings
• refresh package metadata and lockfiles for the current dependency state

Why

This makes Valhalla configuration consistent with the broader Fleetbase settings model by separating system defaults from organization-level overrides, while still letting organizations supply their own routing/display server settings when needed.