Add frames delay data from native

[antonis]

Description

The frames.delay data should be fetched from native (relevant Android and iOS implementation))

Example span payload:

"spans": [
    {
      "timestamp": 1742508702.814,
      "start_timestamp": 1742508700.431,
      "op": "app.start.cold",
      "span_id": "42dbf44cc31249b4",
      "parent_span_id": "7168f0ee0fb14b00",
      "trace_id": "a8317f799fbb4d4e90103fc8dff13829",
      "status": "ok",
      "description": "Cold Start",
      "origin": "auto.ui.activity",
      "data": {
        "thread.name": "main",
        "thread.id": "13245",
        "frames.slow": 1,
        "frames.frozen": 0, 
        "frames.total": 136, 
        "frames.delay": 0.131674152, <<<
      },