⚗️ Is2392/restore project snaphots

[pcrespov]

What do these changes do?

IN order to have a running demo for Monday in master, @odeimaiz and me decided to restore former project-snapshots concept (yellow) until the new design (red) is fully functional.

This feature is only enabled in master (with WEBSERVER_DEV_FEATURES_ENABLED=1 ) and accessible to TESTER users. Since it is a dev-feature, all data created in these tables will be dumped when the new design is in place

• restores projects_snapshots table
  

• restores CRUD operations on /projects/*/snapshots resource
  

• @odeimaiz , notice that now you have update as well. Please review interaction with the front-end.

Related issue/s

• Implementing ⚗️ MetaModeling backlog #2392

How to test

make devenv
source .venv/bin/activate
cd services/web/server
make install-dev
pytest tests/unit/with_dbs/10/snapshots

[codecov]

Codecov Report

Merging #2534 (47377f0) into master (963fbd1) will increase coverage by 0.5%.
The diff coverage is 93.9%.

@@           Coverage Diff            @@
##           master   #2534     +/-   ##
========================================
+ Coverage    76.5%   77.0%   +0.5%     
========================================
  Files         610     611      +1     
  Lines       23397   23445     +48     
  Branches     2294    2297      +3     
========================================
+ Hits        17918   18076    +158     
+ Misses       4872    4764    -108     
+ Partials      607     605      -2     

Flag	Coverage Δ
integrationtests	66.3% <47.5%> (-0.1%)	⬇️
unittests	71.4% <93.9%> (+0.7%)	⬆️

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

Impacted Files	Coverage Δ
...imcore_service_webserver/snapshots_api_handlers.py	85.0% <90.7%> (+43.7%)	⬆️
...ore_postgres_database/models/projects_snapshots.py	100.0% <100.0%> (ø)
...rver/src/simcore_service_webserver/snapshots_db.py	91.0% <100.0%> (+39.1%)	⬆️
.../src/simcore_service_webserver/snapshots_models.py	100.0% <100.0%> (+7.4%)	⬆️
...simcore_service_director_v2/modules/dask_client.py	90.8% <0.0%> (-3.4%)	⬇️
...ector_v2/modules/comp_scheduler/background_task.py	92.1% <0.0%> (-2.0%)	⬇️
.../director/src/simcore_service_director/producer.py	62.3% <0.0%> (+0.6%)	⬆️
...or_v2/models/schemas/dynamic_services/scheduler.py	97.2% <0.0%> (+0.6%)	⬆️
...simcore_service_webserver/projects/projects_api.py	84.8% <0.0%> (+1.8%)	⬆️
... and 9 more

[odeimaiz]

👍