persist bulk upload error category

app/services/bulk_upload/lettings/validator.rb

@@ -168,6 +168,7 @@ class BulkUpload::Lettings::Validator
           row:,
           cell: "#{cols[field_number_for_attribute(error.attribute) - col_offset + 1]}#{row}",
           col: cols[field_number_for_attribute(error.attribute) - col_offset + 1],
+          category: error.options[:category],
         )
       end
     end

spec/services/bulk_upload/lettings/validator_spec.rb

@@ -51,6 +51,11 @@ RSpec.describe BulkUpload::Lettings::Validator do
         expect(error.row).to eql("7")
         expect(error.cell).to eql("L7")
         expect(error.col).to eql("L")
+        expect(error.category).to be_nil
+
+        error = BulkUploadError.order(:row, :field).find_by(field: "field_111")
+
+        expect(error.category).to eql("setup")
       end
     end