feat: Add DISTINCT_ARRAY aggregation type

[SrikarMannepalli]

Description

Adds DISTINCT_ARRAY aggregation type

Checklist:

• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• Any dependent changes have been merged and published in downstream modules

[github-actions]

Test Results

97 tests  ±0   97 ✔️ ±0   27s ⏱️ ±0s
32 suites ±0     0 💤 ±0 
32 files   ±0     0 ❌ ±0 

Results for commit a329e18. ± Comparison against base commit 7b93309.

[codecov]

Codecov Report

Merging #110 (a329e18) into main (7b93309) will decrease coverage by 0.14%.
The diff coverage is 28.57%.

@@             Coverage Diff              @@
##               main     #110      +/-   ##
============================================
- Coverage     58.37%   58.22%   -0.15%     
  Complexity      255      255              
============================================
  Files            87       87              
  Lines          1314     1319       +5     
  Branches         39       39              
============================================
+ Hits            767      768       +1     
- Misses          517      521       +4     
  Partials         30       30              

Flag	Coverage Δ
unit	58.22% <28.57%> (-0.15%)	⬇️

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

Impacted Files	Coverage Δ
...e/graphql/attributes/AttributeModelTranslator.java	65.85% <0.00%> (-1.65%)	⬇️
...ommon/schema/attributes/MetricAggregationType.java	0.00% <0.00%> (ø)
.../AttributeModelMetricAggregationTypeConverter.java	0.00% <0.00%> (ø)
...ils/attributes/MetricAggregationTypeConverter.java	0.00% <0.00%> (ø)
...ttributes/AttributeModelMetricAggregationType.java	100.00% <100.00%> (ø)

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