[FEATURE] Add support to display Data Prepper metrics

[kkondaka]

Is your feature request related to a problem?
Data Prepper (OSIS) added support for generating metrics from logs and traces. These metrics are of OTEL format (initially, SUMMARY and HISTOGRAM kinds are added). We need observability to interpret the OTEL format and display them accordingly.
.

What solution would you like?
The solution should be able to read the metrics from a specific index and interpret the fields as per OTEL format.
The index name to use for this would have a well known prefix (Data Prepper team is looking into this).

We need a way to visualize the histogram data as a histogram. Also when the time duration covers more than one histogram event, the data in different buckets need to be added to show the correct values in each buckets in the visualization.

What alternatives have you considered?
Alternative approach for having index with well known prefix is to take the index name as user input.

Do you have any additional context?
Add any other context or screenshots about the feature request here.

[kkondaka]

Example OTEL metric data stored in opensearch

{
  "_index": "log-metrics",
  "_id": "HucJnoUB6OSw6TpavkQW",
  "_version": 1,
  "_score": 0,
  "_source": {
    "max": 74910000,
    "kind": "HISTOGRAM",
    "buckets": [
      {
        "min": -3.4028234663852886e+38,
        "max": 0.1,
        "count": 0
      },
      {
        "min": 0.1,
        "max": 25000000,
        "count": 1060
      },
      {
        "min": 25000000,
        "max": 75000000,
        "count": 2440
      },
      {
        "min": 75000000,
        "max": 100000000,
        "count": 0
      },
      {
        "min": 100000000,
        "max": 500000000,
        "count": 0
      },
      {
        "min": 500000000,
        "max": 3.4028234663852886e+38,
        "count": 0
      }
    ],
    "count": 3500,
    "bucketCountsList": [
      0,
      1060,
      2440,
      0,
      0,
      0
    ],
    "description": "Histogram of bytes in the events",
    "sum": 134772700000,
    "unit": "Bytes",
    "aggregationTemporality": "AGGREGATION_TEMPORALITY_DELTA",
    "min": 3000000,
    "bucketCounts": 6,
    "name": "histogram",
    "startTime": "2023-01-10T23:34:52.536379Z",
    "explicitBoundsCount": 5,
    "time": "2023-01-10T23:34:52.637805Z",
    "explicitBounds": [
      0.1,
      25000000,
      75000000,
      100000000,
      500000000
    ],
    "request": "/big.pdf",
    "clientip": "127.0.0.1",
    "aggr._duration": 101426000,
    "histogram_key": "bytes"
  },
  "fields": {
    "startTime": [
      "2023-01-10T23:34:52.536Z"
    ],
    "time": [
      "2023-01-10T23:34:52.637Z"
    ]
  }
}