Add multi-origin cyclic discovery rotation to AutoDiscoveryWorker

[Killer-oooo]

Added support for multi-origin AutoDiscovery dispatching with cyclic system rotation.

Changes

• Enabled sending AutoDiscovery missions from multiple configured coordinates (origins)
• Implemented nearest-system-first traversal logic per origin
• Added system-by-system rotation mechanism to cover multiple systems sequentially
• Implemented cyclic loop (after finishing the configured/available systems, starts again from the beginning)
• Preserved existing configuration compatibility

Behaviour

Instead of sending AutoDiscovery only from a single coordinate, the worker now iterates through multiple origins and
dispatches AutoDiscovery missions to nearby systems sequentially in a rotating cycle.

This improves discovery coverage and reduces repetitive targeting of the same systems.

Notes

Existing configurations remain functional.
If only one origin is defined, behaviour remains unchanged.