Add interceptor for metric pixels

[marcosholgado]

Task/Issue URL: https://app.asana.com/0/1125189844152671/1208490557030193/f

Description

Adds an interceptor to be used with metric pixels for a/b/n framework

Steps to test this PR

Note: You can use the patch from the task to avoid having to think about the setup, etc.

• Apply the patch, this will add you to an experiment after clicking the refresh button from the menu and will also try to fire two metric pixels at that point.
• Install and launch the app, go to any website, click the menu and then refresh.
• The enrollment pixel should be sent as well as this metric pixel (date should be today)/experiment_metrics_buttonColorExperiment_control_android_phone?metric=refreshClicked&value=1&conversionWindowDays=0-1&enrollmentDate=2024-10-21&test=1
• No atb, appVersion or OS version should be in the pixel.
• Click again on menu and then refresh.
• Metric pixel should not be sent. Filtering by request dropped should show two pixels for the experiment what were dropped (value=1 already sent and value=2 wrong window)

[marcosholgado]

• Add first batch of search/app_use retention pixels #5190
• Add interceptor for metric pixels #5163 👈
• develop

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