Add Graph Implementations in Python, C, and Java with DFS Algorithm

[muzhar01]

Description

Please provide a summary of your project or the changes related to the issue. This PR introduces implementations of a graph data structure and the Depth First Search (DFS) algorithm in three programming languages: Python, C, and Java. Each implementation showcases how to create a graph, add edges, and perform a DFS traversal. The goal is to provide educational resources and examples for beginners to understand graph algorithms.

List your tech stack and any dependencies that are required for this change.

• Python: No external dependencies
• C: Standard C library
• Java: Java Development Kit (JDK)

Type of change

• [X] New Project
• [ ] New Feature
• [ ] Bug fix

Issue number:

Checklist:

• [X] I have included a README.md file for my project clearly explaining its purpose, functionality, and usage instructions (applicable for new projects, not bug fixes).
• [X] My code adheres to the style guidelines outlined by this project.
• [X] I have thoroughly reviewed my code to identify and address any potential errors or inconsistencies.
• [X] I have added clear and concise comments to my code, especially in sections that might be challenging to understand at first glance.
• [X] I have reviewed and followed the project's Contributing Guidelines to ensure my contribution aligns with the project's requirements.

[sudo-parnab]

@muzhar01 please read #8

[muzhar01]

🛠️ Project Proposal: Graph - DFS Algorithm #50