[Custom rutimes - Raster] Mosaic Builder UI

[vincentsarago]

Let's create a simple Demo UI to create Mosaic

in titiler-pgstac (eoapi.raster), a Mosaic is a stac-api (pgSTAC) Search request, which we register through the /mosaic/register endpoint (https://stac-utils.github.io/titiler-pgstac/advanced/metadata/)

Requirements:

• Per Collection Mosaic: Ideally a mosaic is Per Collection (because then you can assume that all items have the same assets or at least share a minimal set of assets)
• add bounds for the mosaic from the Collection metadata
• add set of defaults mosaic options (asset selection, expression, color correction, rescaling ....) from which we can construct Tile URLs
• add an option to get Min/Max zoom from all the assets (or selected asset 🤷)

Note: To be able to fully create a perfect mosaic, the user might need to get statistics/info from items so it will be nice to have a place for this.

[vincentsarago]

I've added a first version with https://github.com/developmentseed/eoAPI/pull/106 but some features still need to be added

[vincentsarago]

To Do

1. get more assets metadata

within the current builder we get the list of assets from the collection metadata https://github.com/developmentseed/eoAPI/blob/7b429e8106438faf5f4cb24cd09bb23b7edb6b80/runtime/eoapi/raster/eoapi/raster/templates/mosaic-builder.html#L450-L482

This is nice but not enough, we should add a button to retrieve information about Item (using STACReader.info() for the first item in a collection, assuming all items are similar 😬 🤷 )

2. add link to viewer

When we register the mosaic we get a set of links https://github.com/developmentseed/eoAPI/blob/7b429e8106438faf5f4cb24cd09bb23b7edb6b80/runtime/eoapi/raster/eoapi/raster/templates/mosaic-builder.html#L588-L595

blocked by https://github.com/stac-utils/titiler-pgstac/issues/114

[zacharyDez]

@vincentsarago; isn't this implemented now?

[vincentsarago]

@zacharyDez some of it yes but it still needs some work to be ✨