Tornado: Add option to exclude certain HTTP statuses from tracing

[alexander-alderman-webb]

Problem Statement

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

Solution Brainstorm

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[linear]

PY-1862 Tornado: Add option to exclude certain HTTP statuses from tracing

[alexander-alderman-webb]

Closing because this will be an SDK-wide option: #4869