Implement Aggregations

[dbulaja98]

Aggregations

• [ ] Support adjacencyMatrixAgg
• [x] Support avgAgg
• [x] Support bucketSelectorPipelineAgg
• [x] Support bucketSortPipelineAgg
• [x] Support cardinalityAgg
• [ ] Support childrenAgg
• [ ] Support dateHistogramAgg
• [ ] Support autoDateHistogramAgg
• [ ] Support dateRangeAgg
• [x] Support extendedStatsAgg
• [x] Support filterAgg
• [ ] Support filtersAgg
• [ ] Support geoBoundsAgg
• [ ] Support geoDistanceAgg
• [ ] Support geoHashGridAgg
• [ ] Support geoTileGridAgg
• [ ] Support geoCentroidAgg
• [ ] Support globalAgg
• [ ] Support histogramAgg
• [ ] Support ipRangeAgg
• [x] Support maxAgg
• [x] Support minAgg
• [x] Support missingAgg
• [ ] Support nestedAgg
• [x] Support percentilesAgg
• [x] Support percentileRanksAgg
• [ ] Support rangeAgg
• [ ] Support reverseNestedAgg
• [ ] Support samplerAgg
• [ ] Support scriptedMetricAgg
• [ ] Support sigTermsAgg
• [x] Support statsAgg
• [x] Support sumAgg
• [x] Support termsAgg
• [ ] Support topHitsAgg
• [ ] Support topMetricsAgg
• [x] Support valueCountAgg
• [ ] Support variableWidthHistogramAgg
• [x] Support weightedAvgAgg

Tips

• Find comprehensive info about the aggregation you are going to implement here
• Define aggregation in zio.elasticsearch.aggregation.Aggregations
• Define the public method that represents aggregation in the zio.elasticsearch.ElasticAggregation object, add scaladoc and website documentation for it
• Support "withAgg", "withSubAgg" in the zio.elasticsearch.aggregation package, if possible
• Provide unit tests in the zio.elasticsearch.ElasticAggregationSpec to confirm behavior
• Provide integration tests (it module) in the zio.elasticsearch.HttpExectorSpec to confirm the behavior
• 😇 Feel free to extend other tests as well
• 😊 Feel free to address any follow-up issue either for the aggregation you are implementing or implemented one already

Note: You can use #95 as a reference. If you feel that the pull request size is growing out of control, feel free to split it but make sure to link this issue in each of the related PRs.

[Mitep]

I'll take avgAgg.

[Mitep]

I'll take minAgg

[Mitep]

I'll take sumAgg.

[petarcurcin]

I'll take missingAgg

[Mitep]

I'll take rangeAgg