chore: add data_access support for encrypted endpoints

[frossq]

Allow queries to recognize encrypted option in mappings and encrypted data values

What this PR does / why we need it:

Additional documentation e.g. usage docs, diagrams, reviewer notes, etc.:

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 86.69%. Comparing base (7db95a9) to head (5c26346).
⚠️ Report is 3825 commits behind head on master.

Additional details and impacted files

@@             Coverage Diff             @@
##           master    #1993       +/-   ##
===========================================
+ Coverage   67.67%   86.69%   +19.02%     
===========================================
  Files         264      678      +414     
  Lines        6456    11973     +5517     
===========================================
+ Hits         4369    10380     +6011     
+ Misses       2087     1593      -494     

Files with missing lines	Coverage Δ
...ne_api/lib/astarte_appengine_api/device/queries.ex	95.20% <ø> (+13.89%)	⬆️
...te_data_access/lib/astarte_data_access/mappings.ex	100.00% <ø> (ø)
..._access/lib/astarte_data_access/realms/endpoint.ex	100.00% <ø> (ø)
...starte_data_access/realms/individual_datastream.ex	0.00% <ø> (ø)
.../astarte_data_access/realms/individual_property.ex	66.66% <ø> (ø)

... and 558 files with indirect coverage changes

Flag	Coverage Δ
astarte_adapters	100.00% <ø> (?)
astarte_appengine_api	86.31% <ø> (+3.82%)	⬆️
astarte_data_access	84.97% <ø> (?)
astarte_data_access_generators	100.00% <ø> (?)
astarte_data_updater_plant	87.15% <ø> (+23.15%)	⬆️
astarte_events	80.27% <ø> (?)
astarte_fdo	81.53% <ø> (?)
astarte_fdo_core	77.99% <ø> (?)
astarte_generators	97.74% <ø> (?)
astarte_housekeeping	86.39% <ø> (+38.55%)	⬆️
astarte_realm_management	88.64% <ø> (+22.33%)	⬆️
astarte_rpc	88.23% <ø> (?)
astarte_secrets	87.73% <ø> (?)
astarte_test_suite	100.00% <ø> (?)
astarte_trigger_engine	82.67% <ø> (+38.69%)	⬆️

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