Function encode_exponential_histogram 

fn encode_exponential_histogram(
    table_writer: &mut MultiTableData,
    name: &str,
    histogram: &ExponentialHistogram,
    resource_attrs: Option<&Vec<KeyValue>>,
    scope_attrs: Option<&Vec<KeyValue>>,
    metric_ctx: &OtlpMetricCtx,
    outcome: &mut MetricsIngestOutcome,
) -> Result<bool>