Added Shortest Path Calculator

[Yuvraj960]

Fixes Issue🛠️

Closes #671

Description👨‍💻

It uses the Dijkstra's Algorithm to calculate the shortest path.

Type of change📄

• New feature (non-breaking change which adds functionality)

How this has been tested✅

• Manually tested and verified all the results

Checklist✅

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I am an Open Source Contributor

Screenshots/GIF📷

[github-actions]

Hey @Yuvraj960, Welcome to the project CalcDiverse! 🎊
Thanks for your contribution! Your effort makes this project better. Keep it up! 🙌
Please wait for the PR to be reviewed. Happy Coding!! ✨

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[Rakesh9100]

Pls work on these @Yuvraj960

1. Add Shortest Path Calculator in the heading as well.
2. Design the UI webpage such that the inputs div that we are giving should be present at the left and the diagram on the right, which will look good.
3. The result Shortest Path can be on the bottom center.

[Yuvraj960]

@Rakesh9100 Done all the changes you have asked for!

[Rakesh9100]

Looks good, Merged 🎉 @Yuvraj960