Add more supported datetime timeframes

[fmqbl]

We often ran into situations where we needed to analyse measures for weekdays or specific quarter (e.g. Q3) or with a specific month_name which usually matches with your other service's data. In those cases, to escape updating all your datetime group dimensions with more supported timeframes in datetime/timestamps groups:

This PR adds more supported datetime timeframes so we can use them in filters in looks/dashboards.

Example of such measure is:

• working_days_since_last_viewed_at