Replace off-spec statsdreceiver Summary usage with new exponential histogram

[jmacd]

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

Also mentioned in #5667, the Summary point issued by statsdreceiver uses delta temporality. This is not specified, and delta temporality will never be specified for Summary points. A histogram or exponential histogram is the appropriate choice.

Describe the solution you'd like
Use the exponential histogram aggregator built for this purpose as well as for the OTel-Go SDK, drafted here:
open-telemetry/opentelemetry-go-contrib#1353

Describe alternatives you've considered
Giving Summary an aggregation temporality or letting this kind of use-case stand as a "degenerate cumulative" temporality have both been considered.

Additional context
This requires the exponential histogram to be introduced to the OTel collector first: open-telemetry/opentelemetry-collector#4197

[jmacd]

The "off spec" remark is backed up here: open-telemetry/opentelemetry-specification#2002