Directional wire-connector placement for L2 map links based on device layer and position

L2 topology maps currently do not apply consistent logic for where a wire-connector attaches to a device based on the target device's layer or relative position. As a result, connectors can attach at arbitrary points on a device, producing maps that appear cluttered or inconsistently organized. This enhancement would introduce directional connector placement rules: when the target device resides on a different layer and is positioned south, the connector would attach to the south side of the device; when the target device is on the same layer and is a direct neighbor positioned west or east, the connector would attach to the corresponding west or east side. Applying these rules would produce cleaner, more predictable map layouts, improving readability and reducing the need for manual connector adjustment on large topologies.