Stac should resolve band paths similar to ODC
Stac should resolve band paths similar to ODC

- Use the ODC method for resolving measurement paths
(which handles edgecases like URLs better),
- Skip assets with no location at all.

This fixes Explorer's Stac validation tests 1.0.0.

jeremyh/eo-datasets,GeoscienceAustralia/eo-datasets,jeremyh/eo-datasets,GeoscienceAustralia/eo-datasets