Support multiple measures in one query

[lucafuji]

Is your feature request related to a problem? Please describe. Right now we only compute one measure in one query however multiple measures are doable with some changes. This should save lots of duplicate computation work on dimension

Describe the solution you'd like Creating multiple measure vectors and reduce them at one time.

Additional context Hyperloglog is tricky to be computed together with other agg functions since it does not go through the normal sort reduce stage.