Set up support for AppTP blocklist experiments

[GuiltyDolphin]

Task/Issue URL: https://app.asana.com/0/72649045549333/1209746219895489/f

Description

Adds support for AppTP TDS A/B experiments via privacy configuration.

Steps to test this PR

Automated tests:

• run the AppTPBlockListInterceptorApiPluginTest.kt file

Manual check:

1. Using the remote debugger, add in the features for appTrackerProtection in android-override.json:

                "atpTdsExperiment001": {
                    "state": "enabled",
                    "minSupportedVersion": 52240000,
                    "rollout": {
                        "steps": [
                            {
                                "percent": 100
                            }
                        ]
                    },
                    "settings": {
                        "controlUrl": "experiment/android-tds-a0.json",
                        "treatmentUrl": "experiment/android-tds-a1.json"
                    },
                    "cohorts": [
                        {
                            "name": "control",
                            "weight": 1
                        },
                        {
                            "name": "treatment",
                            "weight": 0
                        }
                    ]
                },

2. Reload the config
3. in AppTP dev settings, force load the blocklist then leave the settings page
4. in logcat, filter to AppTP, you should see the URL being rewritten (similar to screenshot)
5. copy the entry to atpTdsExperiment002, change control value to 0 and treatment to 1. Change state to disabled for atpTdsExperiment001. Verify you're seeing the URL rewritten as treatment & experiment as 002 in the logs (after repeating steps 2-4)

[marcosholgado]

Just a minor change to use a public API rather than a private one.

[marcosholgado]

LGTM