feat: support sum + count aggregation for histogram metrics + merge histogram metric name

[wrn14897]

1. Support sum and count aggregation functions for querying Histogram metrics
2. Merge three types of old Histogram names (xxx_bucket, xxx_count, xxx_sum) into single one xxx

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Latest commit: 175f8c3b109d78284c9ae72f597215252d214f2b

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 2 packages

Name	Type
@hyperdx/api	Minor
@hyperdx/app	Minor

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