Content added to pandas

[sandy088]

This pull request aims to enhance the "PandasBasics" page by providing a more detailed and in-depth introduction to Pandas for beginners. It also incorporates styling improvements to align the page with the established design of our website.

Changes Made:

- Expanded the introduction section to provide a comprehensive overview of Pandas, highlighting its key data structures and features.
- Added a "Why Use Pandas?" section to emphasize the importance of Pandas in simplifying data manipulation tasks.
- Included a "How to Get Started with Pandas" section to guide beginners on installing Pandas and initiating their data analysis journey.
- Styled the page following the layout and design used in the "NumpyBasics" page for consistency across the website.

Purpose:

The primary objective of this pull request is to offer an improved learning experience for individuals interested in data analysis and manipulation using Pandas. By providing a more detailed and styled page, we aim to make the content more accessible and visually appealing for our users. This enhancement is intended to help beginners get started with Pandas more effectively.

Related Issues:

Closes: #187

Testing:

- Checked the content for accuracy and clarity.
- Verified that the styling aligns with the established design patterns on our website.
- Ensured that the page is responsive and user-friendly on various devices and screen sizes.

Screenshots: