Support orderBy[CaseInsensitive](order, fieldNames) in fluent query api

if (sortBy != null && !sortBy.isEmpty()) {
                if (sortOrder == null || sortOrder.isEmpty() || "descending".equals(sortOrder)) {
                   HstQueryBuilder.create(scope)
                      .ofTypes(docType)
                      .orderByDescending(sortBy)
                      .limit(pageSize)
                      .offset(pageSize * (crPage - 1))
                      .build(); 
                } else {
                  HstQueryBuilder.create(scope)
                      .ofTypes(docType)
                      .orderByAscescending(sortBy)
                      .limit(pageSize)
                      .offset(pageSize * (crPage - 1))
                      .build(); 
                    hstQuery.addOrderByAscending(sortBy);
                }
  }

 HstQueryBuilder.create(scope)
                      .ofTypes(docType)
                      .sortBy(sortOrder, sortBy)
                      .limit(pageSize)
                      .offset(pageSize * (crPage - 1))
                      .build();