chore: initial commit Dutra Store POS app

lib/utils/format.dart

@@ -0,0 +1,26 @@
+String formatRupiah(double number) {
+  final rounded = number.round();
+  final formatted = rounded
+      .toString()
+      .replaceAllMapped(RegExp(r'\B(?=(\d{3})+(?!\d))'), (m) => '.');
+  return 'Rp $formatted';
+}
+
+String formatTanggal(DateTime date) {
+  const bulan = [
+    'Jan', 'Feb', 'Mar', 'Apr', 'Mei', 'Jun',
+    'Jul', 'Agu', 'Sep', 'Okt', 'Nov', 'Des'
+  ];
+  return '${date.day} ${bulan[date.month - 1]} ${date.year}';
+}
+
+String formatWaktu(DateTime date) {
+  final j = date.hour.toString().padLeft(2, '0');
+  final m = date.minute.toString().padLeft(2, '0');
+  return '$j:$m';
+}
+
+String uid() {
+  return DateTime.now().microsecondsSinceEpoch.toRadixString(36) +
+      (DateTime.now().millisecond).toRadixString(36);
+}