display the bounds of an asset as a reprojected polygon

[DanielJDufour]

Currently when a user passes a STAC asset that is a COG to stacLayer, the code will:

• fetch and parse the COG metadata
• compute the bounding box of the COG from the xmin, xmax, ymin, and ymax georaster properties
• reproject the [xmin, ymin, xmax, ymax] array-based bounding box to latitude/longitude (4326), keeping the array of 4 numbers format
• display as a rectangle

The new code replaces the last 2 steps, by:

• converting the bounding box to a GeoJSON-like Polygon Feature (without reprojection, so it's still in the projection of the raster); and then...
• reprojecting the polygon to latitude/longitude
• display as a polygon

Here's a screenshot of the new code in action:

You can notice that the bounds are slightly slanted, following more closely the bounds of the raster.

note:
It appears that stac-layer doesn't work for the newest release of Leaflet, so we will have to debug that. That is why the Leaflet version is locked to 1.7.1 in the package.json.

Future Work:

• This work only supports the scenario where an asset is passed to stacLayer, so we still have to address STAC items. I wanted to break this work up into smaller more manageable PRs, so that work will come in another PR.

[m-mohr]

Looks good, I think. Thanks.