Add install generator

[SethHorsley]

🚀 Add RBUI Install Generator

🌟 Features

This PR introduces a new Rails generator for seamless installation of RBUI components and configuration. With this update, users can quickly set up a new Rails application with RBUI integration.

🛠️ New Generator: rbui:install

The new generator performs the following tasks:

• 📦 Adds RBUI gem to the project
• 🏗️ Sets up necessary configurations
• 🎨 Installs and configures Tailwind CSS
• 🔗 Configures JavaScript dependencies

🚀 Usage

To use this new feature:

1. Set up a new Rails application
2. Add the following to your Gemfile:

gem "rbui", path: "../rbui"

3. Run the generator:

rails g rbui:install

📝 Notes

This generator aims to provide a smooth onboarding experience for new RBUI users. Feedback and suggestions for improvement are welcom