add contextual onboarding pixels

[SabrinaTardio]

Task/Issue URL: https://app.asana.com/0/0/1208559887614395/f

Description: Add Contextual onboarding pixels

Steps to test this PR:

1. Run contextual onboarding
2. Check that when choosing a recommended search m_mac_onboarding_search_option_tapped_unique is sent once
3. When typing in the bar while this dialog is on m_mac_onboarding_search_custom_unique is sent once
4. Check that when choosing a recommended site visit m_mac_onboarding_site_option_tapped_unique is sent once
5. When typing in the bar while this dialog is on m_mac_onboarding_site_custom_unique is sent once
6. When clicking skip on fire button dialog check m_mac_onboarding_fire_button_prompt_skip_pressed_unique is sent once
7. When clicking try it on fire button dialog check m_mac_onboarding_fire_button_prompt_try_it_pressed_unique is sent once
8. When pressing on the fire button while the the onboarding is on m_mac_onboarding_fire_button_pressed_u is sent once
9. Check the above is not sent if the onboarding is finished
10. When pressing on the shield icon while the the onboarding is on m_mac_onboarding_privacy_dashboard_opened_u is sent once
11. Check the above is not sent if the onboarding is finished
12. Check that on High Five Dialog m_mac_onboarding_finished_u is sent once
13. Check that when a second site is visited m_mac_second_site_visit_u is sent once
14. Check m_mac_second_site_visit_u is not sent when doing a second search

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Definition of Done:

• Does this PR satisfy our Definition of Done?

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Internal references:

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[github-actions]

	Warnings
⚠️	PR has more than 500 lines of code changing. Consider splitting into smaller PRs if possible.

Generated by 🚫 dangerJS against e5d1408

[alessandroboron]

The PR works as expected. I left few comments. Let me know if you want to discuss any of them.
The only thing in terms of behaviour is that I think we should send the pixel not when the user start typing on the address bar but once it actually performs a navigation? It’s possible they input something then they change their mind and use a suggested search/site.

[SabrinaTardio]

The PR works as expected. I left few comments. Let me know if you want to discuss any of them. The only thing in terms of behaviour is that I think we should send the pixel not when the user start typing on the address bar but once it actually performs a navigation? It’s possible they input something then they change their mind and use a suggested search/site.

The requirement was to have send the pixel when typing