Refactor query shape field data maps

[dzane17]

Description

Refactor query shape field data maps

With the introduction of WithFieldName interface in OpenSearch core (see opensearch-project/OpenSearch#15705), we can now simplify the field data logic in Query-Insights.

Issues Resolved

Resolves #109
Related RFC #69

Testing

Large Search

curl -XGET 'http://localhost:9200/_search?pretty' -H 'Content-Type: application/json' -d '{
  "size": 0,
  "query": {
    "bool": {
      "must": [
        {
          "range": {
            "order_date": {
              "gte": "2023-01-01",
              "lte": "2023-12-31"
            }
          }
        },
        {
          "term": {
            "status": "completed"
          }
        }
      ],
      "filter": [
        {
          "terms": {
            "category": ["electronics", "clothing"]
          }
        }
      ]
    }
  },
  "aggs": {
    "sales_per_month": {
      "date_histogram": {
        "field": "order_date",
        "calendar_interval": "month",
        "format": "yyyy-MM",
        "order": {
          "_key": "desc"
        }
      },
      "aggs": {
        "total_sales": {
          "sum": {
            "field": "total_amount"
          }
        },
        "avg_order_quantity": {
          "avg": {
            "field": "order_quantity"
          }
        },
        "max_order_amount": {
          "max": {
            "field": "total_amount"
          }
        }
      }
    },
    "avg_monthly_sales": {
      "avg_bucket": {
        "buckets_path": "sales_per_month>total_sales"
      }
    },
    "avg_max_order_amount": {
      "avg_bucket": {
        "buckets_path": "sales_per_month>max_order_amount"
      }
    }
  },
  "sort": [
    { "sales_per_month>key": { "order": "desc" } },
    { "total_sales": { "order": "desc" } },
    { "avg_order_quantity": { "order": "asc" } }
  ]
}'

[2024-09-09T13:15:16,352][INFO ][stdout                   ] [integTest-0] bool []
[2024-09-09T13:15:16,354][INFO ][stdout                   ] [integTest-0]   must:
[2024-09-09T13:15:16,354][INFO ][stdout                   ] [integTest-0]     range [order_date]
[2024-09-09T13:15:16,355][INFO ][stdout                   ] [integTest-0]     term [status]
[2024-09-09T13:15:16,355][INFO ][stdout                   ] [integTest-0]   filter:
[2024-09-09T13:15:16,355][INFO ][stdout                   ] [integTest-0]     terms [category]
[2024-09-09T13:15:16,355][INFO ][stdout                   ] [integTest-0] aggregation:
[2024-09-09T13:15:16,356][INFO ][stdout                   ] [integTest-0]   date_histogram [order_date]
[2024-09-09T13:15:16,356][INFO ][stdout                   ] [integTest-0]     aggregation:
[2024-09-09T13:15:16,356][INFO ][stdout                   ] [integTest-0]       avg [order_quantity]
[2024-09-09T13:15:16,357][INFO ][stdout                   ] [integTest-0]       max [total_amount]
[2024-09-09T13:15:16,357][INFO ][stdout                   ] [integTest-0]       sum [total_amount]
[2024-09-09T13:15:16,357][INFO ][stdout                   ] [integTest-0]   pipeline aggregation:
[2024-09-09T13:15:16,357][INFO ][stdout                   ] [integTest-0]     avg_bucket
[2024-09-09T13:15:16,358][INFO ][stdout                   ] [integTest-0]     avg_bucket
[2024-09-09T13:15:16,358][INFO ][stdout                   ] [integTest-0] sort:
[2024-09-09T13:15:16,358][INFO ][stdout                   ] [integTest-0]   desc [sales_per_month>key]
[2024-09-09T13:15:16,358][INFO ][stdout                   ] [integTest-0]   desc [total_sales]
[2024-09-09T13:15:16,358][INFO ][stdout                   ] [integTest-0]   asc [avg_order_quantity]

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[dzane17]

Unrelated build failure fix: #117

[dzane17]

@jainankitk @deshsidd @ansjcy Please take a look again. Since all relevant builders now implement the WithFieldName interface, I combined all three query, aggregation, sort maps into one map.