feat: add text difference checker

[ayshrj]

This pull request introduces a Text Difference Checker feature, which utilizes the diff library to identify differences between two text inputs. This tool is essential for editors, developers, and content creators who need to track changes or compare versions of text documents effectively.

Highlights of the Feature:

• Core Functionality: Leverages the diff library to perform a detailed comparison between two texts, highlighting additions, deletions, and modifications.
• User Interface: Includes a user-friendly interface that displays the differences clearly, making it easy for users to identify changes at a glance.
• Testing: Comprehensive tests ensure the reliability of the difference checking process, covering various scenarios from simple text changes to complex modifications.

[ayshrj]

Hey! I updated the code based on the feedback from the code review