Fix #1358: Cookie consent blocking

[cuba]

Summary of Changes

This will add a setting to Shields to enable cookie consent notices
It will also show a popup on second launch to allow the user to know this feature is available

This pull request fixes #1358

Submitter Checklist:

• Unit Tests are updated to cover new or changed functionality
• User-facing strings use NSLocalizableString()
• New or updated UI has been tested across:
  • Light & dark mode
  • Different size classes (iPhone, landscape, iPad)
  • Different dynamic type sizes

Test Plan:

Make sure that

When the user clicks on "Yes block cookie consent notices" on the popup:

• The setting is enabled in shields
• The cookie notice blocking filter list is enabled
• The animation plays and then the popup disappears

When the user clicks on "No thanks" on the popup

• The setting is not enabled in shields
• The cookie notice blocking filter list is not enabled
• The popup is dismissed

When the setting is enabled:

• The popup doesn't appear on second launch (Note: you will need to enabled it on first launch)
• The cookie consent notices are blocked

When the setting is not enabled:

• The popup appears on a second launch (note that depending on timing other full screen popups might appear in priority)
• Cookie consent notices are not blocked

Persistence

• Test for synchronization between the cookie blocking setting in shields and the filter list is enabled in filter lists screen
• Test for persistence (setting is held) when the app is terminated

Screenshots:

Reviewer Checklist:

• Issues include necessary QA labels:
  • QA/(Yes|No)
  • bug / enhancement
• Necessary security reviews have taken place.
• Adequate unit test coverage exists to prevent regressions.
• Adequate test plan exists for QA to validate (if applicable).
• Issue and pull request is assigned to a milestone (should happen at merge time).

[soner-yuksel]

All comments are fixed and working as expected 🎉

[soner-yuksel]

I have another question. are we supposed to show this pop-up for new users ?

[iccub]

SwiftUI changes, and the new swiftUI does not support accessibility, it has to be fixed

[iccub]

Most of my comments are still unaddressed

[iccub]

Code looks good to me, only thing left is the BraveButton style changes