fix: add sort as parameter for query parameters constructor

https://issues.unige.ch/browse/DLCM-1410

projects/solidify-frontend/src/lib/models/query-parameters/query-parameters.model.ts

@@ -9,8 +9,10 @@ export interface QueryParameters {
 }
 
 export class QueryParameters implements QueryParameters {
-  constructor(defaultPageSize?: number) {
+  constructor(defaultPageSize?: number, sort?: Sort) {
     this.paging = new Paging(defaultPageSize);
     this.search = new Search();
+    this.sort = sort;
   }
+
 }