Coefficient of mean deviation calculator

[Upadhyay-Harshit]

Issue Id you have worked upon -

474

Briefly explain your program logic -

The coefficient of mean deviation calculator quantifies the relative variability of a data set by expressing the mean absolute deviation as a percentage of the mean.

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]

@Upadhyay-Harshit, Files changed are not in sync with the calculator that was required to work upon.

[SarthakKeshari]

Congratulations 🎉 @Upadhyay-Harshit on your contribution. Thanks for adding value to this repository. 😊

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