Archetypes for external datasets

[crisely09]

• Add ReadStore
• Make Store inherit ReadStore
• Add ExternalDataset as ReadStore + other methods (types)

Missing:

• forge methods to access external datasets
• specializations
• tests

[codecov-commenter]

Codecov Report

Attention: 90 lines in your changes are missing coverage. Please review.

Comparison is base (9ffefac) 74.13% compared to head (d85ee1c) 73.92%.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #353      +/-   ##
==========================================
- Coverage   74.13%   73.92%   -0.21%     
==========================================
  Files          93       97       +4     
  Lines        5919     6056     +137     
==========================================
+ Hits         4388     4477      +89     
- Misses       1531     1579      +48     

Flag	Coverage Δ
unittests	73.92% <59.27%> (-0.21%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files	Coverage Δ
kgforge/core/archetypes/__init__.py	100.00% <100.00%> (ø)
kgforge/specializations/stores/bluebrain_nexus.py	28.63% <ø> (ø)
tests/conftest.py	98.98% <ø> (ø)
tests/core/archetypes/test_dataset_store.py	100.00% <100.00%> (ø)
tests/core/archetypes/test_read_only_store.py	100.00% <100.00%> (ø)
tests/core/archetypes/test_store.py	100.00% <100.00%> (ø)
...sts/specializations/stores/test_bluebrain_nexus.py	93.97% <100.00%> (+0.07%)	⬆️
kgforge/core/archetypes/store.py	69.56% <86.66%> (+10.20%)	⬆️
kgforge/specializations/stores/demo_store.py	41.01% <81.81%> (+1.59%)	⬆️
kgforge/core/forge.py	64.62% <62.50%> (-0.09%)	⬇️
... and 2 more

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[crisely09]

@MFSY you requested changes, this needs your approval anyway

[crisely09]

add elastic method

[crisely09]

do download instead of one or many (same for the other methods)

[crisely09]

Merged in the SPARQL store specialization