Add Bottom navigation for mobile

[LuccaGugescu]

Integrate Mobile Bottom Navigation: [Dashboard, Search, Strategies, Market News]

To enhance user navigation, implement a sleek bottom navigation bar on the mobile interface featuring tabs for Dashboard, Search, Strategies, and Market News.

For user-specific actions such as Settings and Logout, design a user avatar icon. Upon clicking the avatar, a modal will gracefully appear underneath, providing convenient access to personalized information, settings, and the option to log out. Take inspiration from the mobile web version of YouTube for a seamless and user-friendly experience.