Allow flexible crs for bbox in urban_centre module

[SergioRec]

Description of the Feature to be Added

Usually bounding boxes are provided in EPSG: 4326 as a list of coordinates. Currently, the urban_centre module can only take bounding boxes in ESRI: 54009 and GeoDataFrame format, which forces the user to create the gdf before calculating the urban centre.

We should add the possibility of providing a bounding box as a list in any crs, and convert it automatically if not in ESRI: 54009.

(OPTIONAL) Suggested Implementations

A new function could be added to convert the list of coordinates to a bbox:

    bbox_gdf = gpd.GeoDataFrame(
        geometry=[box(*["bbox"])], crs="crs"
    )

window_raster function within urban_centre module has a check to raise an exception if bbox crs is not ESRI: 54009. A crs reprojection with a warning could be added here instead.

Unit tests need to be amended accordingly.

Additional context

The E2E script now includes a reprojection step. This needs to be removed once this change is implemented.