Enhanced README Examples for number/int32 Namespace

[CodeMaverick2]

Issue -> #1597

Description :

This PR enhances the README documentation for the number/int32 namespace by adding comprehensive and illustrative examples. The previous examples were minimal and did not fully showcase the functionality provided by the number/int32 namespace. This improvement aims to provide users with clear and practical examples to better understand and utilize the utilities within this namespace.

---

Changes Made

1. Updated README:

   • Added detailed examples for various utilities within the number/int32 namespace.
   • Examples now cover:
     • Converting numbers to signed 32-bit integers.
     • Performing bitwise operations (AND, OR, XOR, NOT, shifts).
     • Checking and manipulating signed 32-bit integers.
     • Performing mathematical operations (addition, subtraction, multiplication, division, modulo, negation).
     • Using other packages in conjunction with number/int32.

2. Updated index.js:

   • Included all examples present in the README to ensure consistency and provide a practical implementation reference.
   • Demonstrated the use of the base sub-namespace for performing various operations on signed 32-bit integers.

---

• Read, understood, and followed the contributing guidelines

Impact

• Enhanced Documentation: Improves the clarity and usefulness of the README documentation for the number/int32 namespace.
• Practical Examples: Provides users with practical examples to better understand and utilize the utilities within this namespace.
• Consistency: Ensures consistency between the README and example implementation in index.js.

---

[stdlib-bot]

Hello! Thank you for your contribution to stdlib.

We noticed that the contributing guidelines acknowledgment is missing from your pull request. Here's what you need to do:

1. Please read our contributing guidelines.

2. Update your pull request description to include this checked box:

   - [x] Read, understood, and followed the [contributing guidelines](https://github.com/stdlib-js/stdlib/blob/develop/CONTRIBUTING.md)

This acknowledgment confirms that you've read the guidelines, which include:

• The developer's certificate of origin
• Your agreement to license your contributions under the project's terms

We can't review or accept contributions without this acknowledgment.

Thank you for your understanding and cooperation. We look forward to reviewing your contribution!

[Planeshifter]

PR aims to add examples for usage of number/int32, but the added examples are for number/int32/base instead. Closing.