ol-stac and stac-js migration

[m-mohr]

Implements/Fixes

• ol-stac migration #531
• WMS hidden by thumbnails #503 - dev example
• When web-map-links are rendered on map half opacity fill of bbox feature partially covers data #345
• Browser showing smeared thumbnails #369 - example
• Inversion of image outside of BBOX in STAC Browser #407
• add support for decent GeoTIFF compression algorithms: LERC_ZSTD, WEBP, etc. #538

Open issues:

• When navigating between pages, the map sometimes shows unexpected results
• Label extension support - good example missing
• WMS basemaps from USGS don't show up (i.e. are white) and no previews - dev example 1 2
• ItemCollection example doesn't show all items correctly moregeo-it/ol-stac#22 (not released in ol-stac yet)
• Communication between assets ("Show on map" / "shown" badge) and the map needs to be implemented - see also Refactor communication between map and assets #314
• GeoJSON visualization support
• Show popovers directly next to the footprint, if possible.
• Potentially check event.layer.setStyle is not a function error for POINT geometries #554

Potential features to be considered:

• Show thumbnail if map is empty #383
• User-selectable options, e.g. number of previews on map #411 (comment)
• Better display of multispectral / surface reflectance data #309 - example
• Authentication for map layers #626
• Fully embrace stac-js in the codebase #546
• WMS web map link support (potentially only needs to be tested)
• Mapping: Switching between baselayers of different projections #623
• Mapping: "Reset" button to get back to the default view #624
• Authentication for map layers #626
• More advanced basemaps #625
• buildTileUrlTemplate in config.js as an async function buildTileUrlTemplate in config.js as an async function #373

Breaking changes:

• Removed maxPreviewsOnMap
• buildTileUrlTemplate default to null now. The function has a different signature now, an Asset object (see stac-js) is passed as only argument. No other parameters are passen. To get the absolute url for the URL constuction, use asset.getAbsoluteUrl()
• basemaps.config.js has a new format. Multiple basemaps per planet can be provided. The default behaviour of configureBasemap has changed, including a removal of the map parameter.