better date formatting

app/lib/core/extension/date_time.dart

@@ -0,0 +1,13 @@
+extension DateTimeFormat on DateTime {
+  String _twoDigits(int n) => n.toString().padLeft(2, '0');
+
+  String formatWithMinutePrecision() {
+    final year = this.year.toString();
+    final month = _twoDigits(this.month);
+    final day = _twoDigits(this.day);
+    final hour = _twoDigits(this.hour);
+    final minute = _twoDigits(this.minute);
+
+    return '$year-$month-$day $hour:$minute';
+  }
+}