Task/Issue URL: https://app.asana.com/0/1204186595873227/1208547600159201/f
Tech Design URL: https://app.asana.com/0/1204186595873227/1209001242859416/f

Description: Adds metric for TDS override experiment

Steps to test this PR:
Scenario 1: Not Enrolled in a TDS experiment

1. Remove app
2. Run the app check from the debugger that compilation pixel (m.content.blocking.compilation.loopsX.timeY) is sent with only the compilation time as parameter
3. Try turn privacy on and off from menu and dashboard and check no experiment (experiment_metrics_tdsNextExperimentBaseline_treatment_ios_phone) or debug pixel (m.debug.breakage.experiment) is sent
4. Try 3 quick refresh and check no experiment (experiment_metrics_tdsNextExperimentBaseline_treatment_ios_phone) or debug pixel (m.debug.breakage.experiment) is sent

Scenario 2: Enrolled in a TDS experiment

1. Go to Settings -> All debug options -> Configuration URLs click on privacy config and override the URL with the following: https://staticcdn.duckduckgo.com/trackerblocking/config/test/macos-config.json
2. check from the debugger that compilation pixel (m.content.blocking.compilation.loopsX.timeY) is sent with three parameters: compilation time, etag: 2ce60c57c3d384f986ccbe2c422aac44 and experimentName: “tdsNextExperimentBaseline_treatment"
3. Try turn privacy on and off from menu and dashboard and check the following Pixels are sent: experiment_metrics_tdsNextExperimentBaseline_treatment_ios_phone ["pixelSource": "phone", "enrollmentDate": "2025-01-21", "conversionWindowDays": "0", "metric": "privacyToggleUsed", "value": "1”], Pixel fired m.debug.breakage.experiment.u ["tdsEtag": ""2ce60c57c3d384f986ccbe2c422aac44"", "enrolmentDate": "2025-01-21", "experiment": "tdsNextExperimentBaselinetreatment”]
4. Check both are only sent once on privacy toggle
5. Try 3 quick refresh and check 2x and 3x experiment pixel sent: experiment_metrics_tdsNextExperimentBaseline_treatment_ios_phone ["value": "1", "enrollmentDate": "2025-01-21", "metric": "2XRefresh", "conversionWindowDays": "0", "pixelSource": "phone"]
   experiment_metrics_tdsNextExperimentBaseline_treatment_ios_phone ["value": "1", "metric": "3XRefresh", "conversionWindowDays": "0", "enrollmentDate": "2025-01-21", "pixelSource": "phone”]
6. check no extra m.debug.breakage.experiment.u is sent
7. Remove the app reinstall it and follow step one again
8. Try and 2 quick refresh of a page and check is sent m.debug.breakage.experiment.u ["tdsEtag": ""2ce60c57c3d384f986ccbe2c422aac44"", "enrolmentDate": "2025-01-21", "experiment": "tdsNextExperimentBaselinetreatment”]

<!—
Before submitting a PR, please ensure you have tested the combinations you expect the reviewer to test, then delete configurations you know do not need explicit testing.

Using a simulator where a physical device is unavailable is acceptable.
—>

Definition of Done (Internal Only):

• Does this PR satisfy our Definition of Done?

Copy Testing:

• Use of correct apostrophes in new copy, ie ’ rather than ’

Orientation Testing:

• Portrait
• Landscape

Device Testing:

• iPhone SE (1st Gen)
• iPhone 8
• iPhone X
• iPhone 14 Pro
• iPad

OS Testing:

• iOS 15
• iOS 16
• iOS 17

Theme Testing:

• Light theme
• Dark theme

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Internal references:

Software Engineering Expectations
Technical Design Template