Coordinate Transform Issues

[omad]

I've just put in place two work-arounds due to failing coordinate transform tests.

The first is in odc.algo for choosing a Transform Path, which is choosing a different transform depending on something like the GDAL/Proj version.

The other is in odc.apps.dc_tools during the STAC transform. The code is for transform Geographic coordinates into a Projected Coordinate system, and (IMO choosing a bad rounding value), which is resulting in off by 1 values in the transform. I've wrapped these coordinate values in pytest.approx with an epsilon of 1.

I'm not happy with either of these, and the root causes should be addressed and understood.

From #524

I think the STAC geometry transform is from #93, which did include some improvements, but I don't think addressed all the potential problems.