Adding ROI calculator extension

[Archiesachin]

Is your feature request related to a problem? Please describe.
I want to add a ROI calculator that will tell you the return(profit or loss) on the investment over a period of time.

How do we know when the feature is complete?
I will raise a PR as soon as i am assigned the issue so that it will be merged before the contribution period ends.

[github-actions]

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[github-actions]

Hello @Archiesachin! Your issue #2625 has been closed. Thank you for your contribution!