Graphs added in DSA section

[komal-agarwal5]

Related Issue

Closes #349

Description

I have create a sub section for the topic Graphs as a part of the DSA section and added content within it:

• Introduction
• Components
• Adjacency matrix and list representation
• Code implementation in 5 languages
• Types
• Live editor eg with result(create,add,delete,print operations)
• Applications
• Conclusion

Type of PR

• Bug fix
• Feature enhancement
• Documentation update
• Other (specify): _______________

Screenshots / Videos (if applicable)

Checklist

• I have performed a self-review of my code.
• I have read and followed the Contribution Guidelines.
• I have tested the changes thoroughly before submitting this pull request.
• I have provided relevant issue numbers, screenshots, and videos after making the changes.
• I have commented my code, particularly in hard-to-understand areas.

Additional Context

NA

Resources for Guidance

Here are some resources that may be helpful as you contribute to CodeHarborHub:

• Code Harbor Hub Community Features
• Docusaurus Documentation
• React.js Documentation
• Markdown Guide
• MDX Documentation
• Mermaid Documentation

Resources for DSA Features on Our Site:

• Tabs: Switch Languages
• Line Numbering
• Math Equations

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
No data about Coverage
No data about Duplication

See analysis details on SonarCloud

[deepsource-io]

Here's the code health analysis summary for commits 6fb7783..aefa5cf. View details on DeepSource ↗.

Analysis Summary

Analyzer	Status	Summary	Link
JavaScript	✅ Success		View Check ↗

---

💡 If you’re a repository administrator, you can configure the quality gates from the settings.

[ajay-dhangar]

Done