feat: Enable automatic latency recording for consumers #308
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The goal of this change is to record a common latency metric for all consumers that use Arroyo.
The new metric is called
arroyo.consumer.latency
-- it represents the time in seconds from when the message was initially produced (broker timestamp) to when the consumer successfully committed the offset for a message.Note that if a consumer is doing either manual batching (not using Arroyo's built in Reduce/Batch) or manual committing of offsets (not using Arroyo's CommitOffsets strategy), then the metric will not be recorded automatically.
Closes #307