fix(UI): Added missing sprite definitions for overmap auto travel path

[thedyze]

Checklist

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Purpose of change

Fix fallback sprite showing for the auto travel path on the overmap. This was because of missing definitions in the UDP tile_config.

Describe the solution

Also assigned a semitransparent sprite for when the path is on a different z-level than currently viewed. (id's: "overmap_path_above" and "overmap_path_below")

Describe alternatives you've considered

Testing

Additional context

[chaosvolt]

:D

[scarf005]

related: #5556