Check for pcb_trace intersections when determining if two pcb_traces are connected

[homie-gg[bot]]

Here are some pull requests that might be helpful reference for this task:

• Implement nonoverlapping checks, add NetManager system for detecting connected traces, add workflows
• Fix overlap test failing when port ids are not correctly added to trace, add regression test case
• reproduction for bad traces error (traces do not overlap)

[homie-gg[bot]]

This might have already been done via: PCB Connectivity Map (see what traces a port is physically connected to).

[homie-gg[bot]]

This might have already been done via: Support adding connections to an existing connectivity map.