[WIP] Add web application for user input operations

[Copilot]

Thanks for asking me to work on this. I will get started on it and keep this PR's description up to date as I form a plan and make progress.

Original prompt

Design and implement a web application similar to the one illustrated in the provided image (image2). The application should allow users to perform operations (double, increment, decrement, and halving) over an input value, then see the calculated result. Users should also have the ability to clear inputs and operations output. Details for implementation include:

Features:

1. Create a UI with the following labels and controls:

   • A title on the page stating "Function on user input program with value".
   • Buttons labeled "double", "increment", "decrement", "half", and "Clear" to perform respective operations.
   • A text input field where users can input a numeric value.
   • A "Submit" button to execute the selected function.
   • A display area to show the results of the previous execution.

2. Implement the following mathematical operations:

   • Double: Multiplies the input value by 2
   • Increment: Increases the input value by 1
   • Decrement: Decreases the input value by 1
   • Half: Divides the input value by 2

3. When an operation button is clicked, the corresponding function should be applied to the latest user input, and the results should be displayed in the result area.

4. The "Clear" button should reset the input field and clear the result display area.

5. Include a simple and responsive UI using a CSS library like Bootstrap or Tailwind CSS.

6. The system should have proper error handling for non-numeric inputs or empty fields.

7. Implement pagination functionality on the page to simulate the section shown in the lower right of this image labeled "Pagination Component."

• Include buttons or links to navigate between different pages / sections of content.

8. Use a modern web framework (preferably React or Vue.js) for this project.

9. Provide documentation on how to set up and run the project locally or deploy it using the given GitHub repository.

This pull request was created from Copilot chat.

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