Add support for remote datasets

[berombau]

This is the PR to close #441.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 91.97%. Comparing base (412bf45) to head (d97a1d2).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #842      +/-   ##
==========================================
+ Coverage   91.95%   91.97%   +0.02%     
==========================================
  Files          47       47              
  Lines        7293     7293              
==========================================
+ Hits         6706     6708       +2     
+ Misses        587      585       -2     

see 1 file with indirect coverage changes

[LucaMarconato]

These are the diffs from the old PR that got closed because of the many merge conflicts. Let's use this code to shape the new implementations.

• https://github.com/scverse/spatialdata/pull/442/files/7bb87ba5da68ab9fb4a0a7dcd06751b36290d4c1
• https://github.com/scverse/spatialdata/pull/442/files/e6b6ae9502520f4e54f856787d3874d90a89058c..e3e0c28638ba932c62d04e6b03e4ca711d61bf27
• https://github.com/scverse/spatialdata/pull/442/files/f1d4f27ec5e6bfc8fed36032bf50ab831d3a453f..74283b1092b8858f46e7b5980a57b6b4c03d1575

[berombau]

I added my progress. Local read/write behavior should still work. Remote reading for raster (image, labels) elements is added. The tests succeeded locally and I expanded the remote tests for future work on reading and writing all elements.

Next steps are:

• merging with the incremental reading now in main
• finish the public element read functions
• merge

Out-of-scope for this PR:

• support for the remaining points, shapes and tables elements
• support writing to remote

[LucaMarconato]

Thanks @berombau! I will take over for this 😊 (timeline, working on 2-3 PRs and then I want to work on this next).