UsageSeries

One usage metric of an account by day, with a total and a per-project breakdown.

Field	Type	Description
`scope`	`CreditUsageScope`
`groupBy`	`[String!]`
`metric`	`String!`
`label`	`String!`
`unit`	`String!`	Unit of the values, such as credits, calls or bytes
`summary`	`UsageSeriesSummary!`
`timeframe`	`UsageTimeframe!`
`series`	`[UsageSeriesBucket!]!`
`projects`	`[UsageSeriesProject!]!`