CMS-2927 Create DateRangeAggregation backend classes

Should support strings for date math expressions also
CMS-2924 Create DateRangeAggregation.ts with friends
CMS-2835 Create TS-equvialent for DateRangeAggregation
CMS-2923 Create daterange aggregationQuery classes
Added modified-stamp during create node
CMS-2923 Create daterange aggregationQuery classes

Moved stuff to correct packages