Reorganize Action Menu for Improved UX

[crimsonleaf363]

Description

Reorganize the action menu to improve the user experience and increase engagement with key features.

Proposed Changes

1. Remove "Wallets" from Action Menu: The "Wallets" section is already easily accessible via the hamburger menu. Removing it will declutter the menu and make other features more prominent.
2. Add "Explore" Action: "Explore" will present users with key Cake Wallet features such as Cake Pay and NanoGPT. This change will make these features more noticeable and quicker to access.
3. Relocate "Sign & Verify": Move the "Sign & Verify" feature to the "Wallets" section within the hamburger menu. This feature will be still be accessible while freeing up space in the action menu for the new "Explore" action.

Rationale

• Reduce the number of swipes required to access key features, improving overall app usability.
• Increase user engagement with features like Cake Pay and NanoGPT by making them more prominent.
• Simplify the action menu, which can improve the app's intuitive nature and user experience.