Add initial support for multidimensional data

[pantierra]

In several occasions we would like to showcase multidimensional array support in eoAPI. Let's start adding this an an optional feature to eoapi-k8s.

[pantierra]

Technical context

titiler supports multidimensional/xarray data, but there are some constraints depending on the file format, file system support, and performance considerations. As such, current support is somewhat custom and may require special implementation based on the data context. In the future, this could evolve into a set of best practices.

Plan

In the first step (this issue), we plan to introduce a separate multidimensional raster service to eoapi-k8s. This will prevent performance degradation in the original 2D raster service and avoid any potential conflicts from running both services on the same instance.

Multidimensional data in STAC catalogues

For now, we will only support URL-based datasets. Multidimensional support in STAC catalogs may be added later, though it's likely that this will be best addressed through upstream work in titiler-pgstac.

fyi, @j08lue, @vincentsarago