Feature request: support high resolution metrics

Is your feature request related to a problem? Please describe.

Amazon CloudWatch announced support for high resolution metric extraction from structured logs (EMF). Customers can now provide an optional StorageResolution parameter within the EMF specification with a value of 1 or 60 (default) to indicate the desired resolution (in seconds) of the metric.

We should consider adding support for this new optional parameter to Metrics.

The EMF log should have this format:

{
  "_aws": {
    "CloudWatchMetrics": [
      {
        "Metrics": [
          {
            "Name": "Time",
            "Unit": "Milliseconds",
            "StorageResolution": 60 // <- new key
          }
        ],
        ...
      }
    ]
  },
  "Time": 1
}

As part of this issue we should also update the API docs, documentation, and unit/integration tests.

Describe the solution you'd like

import software.amazon.lambda.powertools.metrics.Metrics;
import software.amazon.cloudwatchlogs.emf.logger.MetricsLogger;

public class MetricsEnabledHandler implements RequestHandler<Object, Object> {

    MetricsLogger metricsLogger = MetricsUtils.metricsLogger();

    @Override
    @Metrics(namespace = "ExampleApplication", service = "booking")
    public Object handleRequest(Object input, Context context) {
        // Publish a metric with standard resolution i.e. StorageResolution = 60
        metricsLogger.putMetric("SuccessfulBooking", 1, Unit.COUNT, Resolution.STANDARD);
        // Publish a metric with high resolution i.e. StorageResolution = 1
        metricsLogger.putMetric("SuccessfulBooking", 1, Unit.COUNT, Resolution.HIGH);
        // The last parameter (storage resolution) is optional
        metricsLogger.putMetric("SuccessfulBooking", 1, Unit.COUNT);
    }
}

Describe alternatives you've considered

Additional context

aws-powertools / powertools-lambda-java

Feature request: support high resolution metrics #1041