Feature: Streamline the campaign setup

[joemcgill]

Caution

This feature depends on #2631.

Changes proposed in this Pull Request:

Closes #2459.

This feature branch includes the following issues:

• Campaign Creation: Update Budget Setup Card #2502
• Campaign Creation: Add minimum budget limit #2503
• Remove the accounts connection page from the Ads Setup flow #2534
• Consolidate the ad creation step in the Ads Setup flow with the one used in Onboarding #2535
• Remove the billing setup page from the Ads setup flow #2536
• Review budget recommendation text  #2600
• Campaign Creation: Add coupon banner to the top of the page #2499
• Campaign Creation: Remove Ads Audience field #2501
• Campaign Creation: Add confirmation modal when user skips without creating a campaign #2504
• Campaign Creation: Show campaign setup fields immediately during onboarding #2500

This feature branch incudes changes from the following pull requests:

• Streamline campaign setup: Show campaign setup fields immediately during onboarding #2533
• Streamline campaign setup: Remove ads audience field from paid ads setup during onboarding #2551
• Streamline campaign setup: Change the campaign setup and creation to use the recommended budget as the initial value #2552
• Streamline campaign setup: Change to use banner to present the ad credit offer during onboarding #2558
• Streamline campaign setup: Add confirmation modal when user skips without creating campaign during onboarding #2563
• Streamline campaign setup: Temporarily remove the billing setup step from the Ads-onboarding #2577
• Streamline campaign setup: Adjust the minimum average daily cost of a campaign to 30% of the highest recommended value among audience countries #2583
• Streamline campaign setup: When the accounts have been connected before, skip accounts setup step during the Ads-onboarding #2595
• Streamline campaign setup: Consolidate the campaign setup UI in the onboarding with the one in the Ads-onboarding and add the billing setup back #2623
• Streamline campaign setup: Update budget recommendation text #2629
• Streamline campaign setup: Sync the code changes with the feature branch of Streamline onboarding #2627
• Streamline campaign setup: Sync the code changes with the feature branch of Streamline onboarding #2630
• Streamline campaign setup: Copy the usFetchBudgetRecommendation hook #2637