Allow for users to transpose variables

[abarciauskas-bgse]

We found at least one public dataset comes with coordinates (time, lon, lat) where rasterio.reproject requires coordinates ordered (lat, lon). See this discussion: corteva/rioxarray#674

For now, a workaround would be just to allow for users to transpose x and y. Work is started here: https://github.com/developmentseed/titiler-xarray/tree/ab/add-transpose-var

Should I move forward with this approach (building off of the changes in #7) and add tests or do we think:

1. The problem should be addressed in upstream libraries, like rioxarray or rasterio, to allow for dimensions arriving out of order when reprojecting
2. We should limit the support of titiler-xarray for datasets where dimensions are in the right order.

[abarciauskas-bgse]

@vincentsarago @sharkinsspatial interested in your thoughts on this.

[vincentsarago]

@abarciauskas-bgse I think we should to it automatically like we do for lon >180 https://github.com/developmentseed/titiler-xarray/blob/main/titiler/xarray/reader.py#L59-L61

[abarciauskas-bgse]

That makes sense, I will address it @vincentsarago unless you get to it first