Add option to exclude certain HTTP statuses from tracing in SDK

[dingsdax]

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, JavaScript).

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

[linear]

NET-529