GetSeverityReportOrder returns the order in which we want to report severities.

GroupTeamFindings gathers a map of each team and the summaries of the projects that team "owns", and should receive reports for.

NewSeverityMap returns a map of finding severities all associated with a value of 0, meant to be populated with a count of findings in the relevant scope.

NewSlackReporter returns a new SlackReporter instance for reporting out findings to a Slack server.

TeamProjectCollection is a concrete type so that it can implement the sort interface, for custom sorting.