Added Laplace Calculator

[nipun221]

Issue Id you have worked upon - #361

Briefly explain your program logic -

added a laplace transformation calculator that takes 3 inputs from user 1) Equation to transform 2) time variable 3) transform variable And gives the result after laplace transformation.

Screenshots(Attach 2 screenshots of your own input and output) -

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• [x] My code follows the guidelines of this project.
  

• [x] I have performed a self-review of my own code.
  

• [x] I have commented my code.
  

• [x] My code gives the correct output.
  

• [x] I affirm that I strictly follow contributing guidelines and code of conduct.

[SarthakKeshari]

Congratulations 🎉 @nipun221 on your contribution. Thanks for adding value to this repository. 😊

Let's celebrate this fest 😃 by providing more developers 👨‍💻👩‍💻 an opportunity to contribute. Help us make this repository reach far and more by sharing this to your friends and colleagues.

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[SarthakKeshari]

Hey 👋, may you also encourage us by clicking the star icon on the repository main page. ⭐