Merge cloud libs into one package (#331)

[Kirill888]

Combine odc.{aws,aio,azure,thredds} into one odc-cloud package.

• odc-aws is now odc-cloud
• odc-aio is now odc-cloud[ASYNC]
• odc-thredds is now odc-cloud[THREDDS]
• odc-azure is now odc-cloud[AZURE]

See #331 for discussions of reasons behind this change.

[codecov]

Codecov Report

Merging #343 (b331d3d) into develop (21c5312) will decrease coverage by 0.02%.
The diff coverage is 100.00%.

@@             Coverage Diff             @@
##           develop     #343      +/-   ##
===========================================
- Coverage    57.76%   57.74%   -0.03%     
===========================================
  Files           77       74       -3     
  Lines         6237     6234       -3     
===========================================
- Hits          3603     3600       -3     
  Misses        2634     2634              

Impacted Files	Coverage Δ
libs/cloud/odc/aws/_find.py	97.43% <ø> (ø)
libs/cloud/odc/aws/queue.py	89.70% <ø> (ø)
libs/cloud/odc/cloud/_version.py	100.00% <ø> (ø)
libs/cloud/odc/ppt/__init__.py	50.00% <ø> (ø)
libs/cloud/odc/ppt/async_thread.py	100.00% <ø> (ø)
libs/cloud/odc/aio/__init__.py	59.58% <100.00%> (ø)
libs/cloud/odc/aws/__init__.py	21.57% <100.00%> (ø)
libs/cloud/odc/azure/__init__.py	100.00% <100.00%> (ø)
libs/cloud/odc/thredds/__init__.py	82.14% <100.00%> (ø)

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[Kirill888]

sorry for merging without review, but I think we discussed it enough in an issue and I want to push those things to pypi today

[alexgleith]

No worries :-)