feat: add core-elasticsearch package

[faustbrian]

Proposed changes

Adds an optional elasticsearch integration to provide more powerful searching capabilities for large datasets.

Types of changes

• New feature (non-breaking change which adds functionality)

Checklist

• I have read the CONTRIBUTING documentation
• Lint and unit tests pass locally with my changes

[codecov-io]

Codecov Report

Merging #1264 into develop will decrease coverage by 0.58%.
The diff coverage is 8.33%.

@@            Coverage Diff             @@
##           develop   #1264      +/-   ##
==========================================
- Coverage    75.08%   74.5%   -0.59%     
==========================================
  Files          416     422       +6     
  Lines         7272    7318      +46     
  Branches       988     990       +2     
==========================================
- Hits          5460    5452       -8     
- Misses        1596    1645      +49     
- Partials       216     221       +5

Impacted Files	Coverage Δ
packages/core-blockchain/lib/blockchain.js	77.11% <ø> (ø)	⬆️
packages/core-elasticsearch/lib/server/index.js	0% <0%> (ø)
...ackages/core-elasticsearch/lib/services/storage.js	0% <0%> (ø)
packages/core-elasticsearch/lib/defaults.js	0% <0%> (ø)
packages/core-elasticsearch/lib/services/client.js	0% <0%> (ø)
packages/core-elasticsearch/lib/server/routes.js	0% <0%> (ø)
packages/core-elasticsearch/lib/server/handler.js	0% <0%> (ø)
packages/core-database-postgres/lib/connection.js	75.55% <100%> (+0.21%)	⬆️
packages/core-forger/lib/manager.js	72.63% <0%> (-9.48%)	⬇️
...p2p/lib/server/versions/internal/handlers/utils.js	80% <0%> (-6.67%)	⬇️
... and 6 more

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[faustbrian]

We should leave this open until #1176 is merged because I can remove a bunch of code after created_at and updated_at no longer exist.