Feat/BottomNavigation - added BottomNavigation with Example

[dhavalveera]

This Pull Request introduces the BottomNavigation component to Flowbite-React, enhancing the navigation experience for users. The BottomNavigation component offers a convenient way to navigate between different sections or pages of an application, displayed at the bottom of the screen for easy access. Leveraging this component in Flowbite-React provides users with intuitive and efficient navigation options, contributing to an improved user experience overall. With this addition, Flowbite-React becomes even more versatile, catering to a broader range of UI navigation needs.

Summary by CodeRabbit

• New Features
  • Introduced a new Bottom Navigation component for creating navigational bars at the bottom of web pages.
  • Added examples and documentation for implementing Bottom Navigation with various styles including default and with borders.
  • Enhanced theming support for Bottom Navigation, allowing customization of items, icons, and labels.
• Documentation
  • Added documentation for the Bottom Navigation component, including usage examples.
• Tests
  • Implemented test cases for the Bottom Navigation component to ensure proper rendering and functionality.
• Refactor
  • Expanded theme configuration to include Bottom Navigation styling options.