Refactor attack objects service for improved structure and asynchronicity

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 87.50000% with 22 lines in your changes are missing coverage. Please review.

Project coverage is 70.26%. Comparing base (ca9e552) to head (914a510). Report is 1 commits behind head on project-orion.

Files	Patch %	Lines
app/services/attack-objects-service.js	69.64%	17 Missing :warning:
app/repository/attack-objects-repository.js	95.83%	5 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## project-orion #343 +/- ## ================================================= + Coverage 70.20% 70.26% +0.05% ================================================= Files 150 151 +1 Lines 14393 14365 -28 Branches 1671 1667 -4 ================================================= - Hits 10105 10093 -12 + Misses 4278 4262 -16 Partials 10 10 ```

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[sonarcloud[bot]]

Quality Gate failed

Failed conditions
31.3% Duplication on New Code (required ≤ 3%)

See analysis details on SonarCloud