chore: Move the drift_offline_first to legacy in favor of Serverpod implementation (#32)

legacy/drift_offline_sync/benchmark/utils/conversion.dart

@@ -0,0 +1,48 @@
+import 'package:intl/intl.dart';
+
+final formatter0 = NumberFormat.decimalPatternDigits(decimalDigits: 0);
+final formatter2 = NumberFormat.decimalPatternDigits(decimalDigits: 2);
+final formatter3 = NumberFormat.decimalPatternDigits(decimalDigits: 3);
+
+extension FormattedStorageSize on num {
+  String toFormattedDuration() {
+    var time = this;
+    var unit = 1;
+
+    while (time.abs() > 1000 && unit < Duration.microsecondsPerSecond) {
+      time /= 1000;
+      unit *= 1000;
+    }
+    while (unit > Duration.microsecondsPerMinute && time.abs() > 60) {
+      time /= 60;
+      unit *= 60;
+    }
+    return '${formatter2.format(time)} ${switch (unit) {
+      1 => 'μs',
+      Duration.millisecondsPerSecond => 'ms',
+      Duration.microsecondsPerSecond => 's',
+      Duration.microsecondsPerMinute => 'min',
+      Duration.microsecondsPerHour => 'h',
+      _ => throw Exception('Unexpected time unit: $unit'),
+    }}';
+  }
+
+  String toFormattedStorageSize() {
+    var storageIncrease = toDouble();
+    var storageUnit = 1;
+
+    while (storageIncrease > 1024) {
+      storageIncrease /= 1024;
+      storageUnit *= 1024;
+    }
+
+    final storageUnitString = switch (storageUnit) {
+      1 => 'B',
+      1024 => 'KB',
+      const (1024 * 1024) => 'MB',
+      _ => throw Exception('Unexpected storage unit: $storageUnit'),
+    };
+
+    return '${formatter2.format(storageIncrease)} $storageUnitString';
+  }
+}