Proxy for ironArray arrays

[FrancescAlted]

For the Spark interface it would be nice to implement a proxy for accessing remote ironArray arrays so that we don't need a shared filesystem.

This can be achieved quite easily with a similar interface than the current proxy for Zarr objects. We just need to implement a network interface to our ironArray objects and ask for metainfo (shape, dtype...) and slices remotely.

As a proof of concept, we can use FastAPI (for the server) and requests (for the client).

[martaiborra]

This work is being done in inaos/iron-array-python#189. This work is very preliminary and it doesn't let compute a reduction of a remote viewed array, because it doesn't copy the array before computing the reduction.