(Wallet) ☂️ Main umbrella issue for new onboarding flow

[simoarpe]

Description

Main umbrella issue to keep track of the new onboarding implementation for the Brave Wallet.

Figma design link: https://www.figma.com/file/oXIiv45pIhF2RGlpEjOfUg/Wallet-onboarding?node-id=6223%3A70942&mode=dev

⚠️ Note: the issue can be closed when all its related issues will be addressed.

• ✅ Tweak onboarding navigation controls - Tweak navigation controls for new onboarding UI #35488
• ✅ Initial onboarding screen and T&C screen - Initial onboarding screen when accessing Brave Wallet #35713
• ✅ Connect backup wallet action from WebUI to native backup screen - Connect back up wallet action from WebUI to native backup screen #35928
• ✅ Password creation screen - Implement new password creation screen when accessing Brave Wallet for the first time #36552
• ✅ Wallet creation screen - Tweak Wallet creation screen #36606
• ✅ Improve Wallet onboarding adapter - Improve Wallet onboarding adapter #36678
• ✅ Unlock Wallet screen - Implement new unlock screen when accessing Brave Wallet #37720
• ✅ Tweak layouts and styles following updated Figma design - Tweak onboarding layouts and styles following updated Figma design #38890
• ✅ Set up touch ID screen - Implement new touch ID screen #38987
• ✅ Connect unlock action from WebUI to native unlock screen - Connect unlock action from WebUI to native unlock screen #40224
• ✅ Recovery phrase flow - Implement Wallet recovery flow #40168
• ✅ Confirmation screen - Implement new confirmation screen when finishing onboarding #39348

Out of Scope

✅ Network selection screen is currently out of scope.