MODEUR-166 etc: add view to normalise usage data

  - view for collapsing multiple invoices (and other data items) for an agreement line to avoid repeat counting of usage for every invoice etc.

Author: nielserik

src/main/java/org/folio/eusage/reports/api/EusageReportsApi.java

@@ -84,6 +84,7 @@ static String agreementEntriesTable(TenantPgPool pool) {
   static String deduplicatedAgreementsView(TenantPgPool pool) {
     return pool.getSchema() + ".unique_agreement_entries_with_aggregated_invoices";
   }
+
   static String statusTable(TenantPgPool pool) {
     return pool.getSchema() + ".status";
   }