--Hr-212 added new extension for activity pipeline for joining

Created new extension for civiUtils.
created ActivitySet named 'Standard pipeline'& four Activity types a.Open Case, b.Interview Prospect, c.Background Check, d.ID badge

1. Create new case for case type 'Program Hiring Process', add activity set 'Standard pipeline'. 
Activity with open case will be created.
On completion of Open case activity, new activity with type 'Interview Prospect' will be scheduled as a followup activity.
On completion of 'Interview Prospect', 'Background Check' will be scheduled as a followup activity.