feat(pii): add data collection for HTTP requests

[Litarnus]

Introduces new classes to support data collection and separate logic of what is collected with how its collected.

Pii/scrubbing logic was deliberately moved into own classes so that framework SDKs can use them and rely on a strong testing harness instead of having to reimplement similar behaviour and tests

RequestDataCollector

This acts as an abstraction layer with the configuration to produce the desired result based on the provided config. It will always use sendDefaultPii unless data collection was explicitly set (opt-in).
Having this class makes testing easier as well as the code in the RequestIntegration more readable, since it can just focus on what to collect instead of dealing with two distinct types of settings.
Also makes removal of the legacy value more easier.

SensitiveDataScrubber

Generic class to perform recursive scrubbing based on the provided behaviour config.

[cursor]

Cursor Bugbot has reviewed your changes and found 1 potential issue.

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[cursor]

Scrubber skips nested sensitive keys

Medium Severity

scrubKeyValueData only inspects top-level keys and copies nested array values unchanged. Sensitive nested keys (for example PHP array cookies like user[password]) are therefore left intact, despite this class being introduced for recursive scrubbing that framework SDKs are expected to reuse.

 

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