Implementation of Stepper Component with Dynamic Navigation, Context Management, and Tests

[arpita009]

• Stepper Component implementation ✅
• Steps configured ✅
• useStepper hook to encapsulate the stepper logic and manage navigation of steps and routing ✅
• Responsiveness ✅
• StepperContext to manage the stepper state (steps, current step) and functions (handleNextStep, setCurrentStep) ✅
• Dynamic step management ✅
• Basic error handling to display an "Invalid Step" message if the route does not match a valid step. ✅
• StepPage is a reusable component that renders the core layout of each step page ✅
• Tests for Stepper component and StepPage ✅