Add option to exclude certain HTTP statuses from tracing in SDK

If not already implemented or only partially implemented:
SDK should not trace incoming **404s by default** to reduce noise. Add a config option to exclude specific HTTP statuses from tracing. This should mirror existing behavior in other SDKs ([Laravel](https://github.com/getsentry/sentry-laravel/blob/master/config/sentry.php#L121-L122), [JavaScript](https://github.com/getsentry/sentry-javascript/pull/16205)).

* New config option (e.g. trace_ignore_status_codes: \[404, ...\])
* Backwards compatible (default still traces 404s)
* Tests + docs updated

首先定位 SDK 的傳入 HTTP tracing 設定，以及涵蓋 HTTP 狀態 tracing 的測試。檢查設定選項是如何撰寫文件的，以及 tracing 決策是如何測試的。完成的標準是存在可設定的狀態排除功能，要求的預設行為維持向後相容，且測試與文件都涵蓋該功能。

由索引模型根據 Issue 內容生成。