Stopwatch

[amwaiting1]

Issue Id you have worked upon -

Stopwatch #576

Briefly explain your program logic -

Implement the stopwatch function, which provides the functions of lap time, pause and resume the stopwatch. The user enters the lap time. There are start, pause, and resume keys. I can display a timer.

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

By raising this PR I affirm that -

• [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 🎉 @amwaiting1 on your contribution. Thanks for adding value to this repository. 😊

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[SarthakKeshari]

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