pull request template

[krishan821]

Is your feature request related to a problem? Please describe.
This repo does not contain a Pull Request template.

Describe the solution you'd like
I would like to add a Pull request template so that if someone wants to raise a pr they can select the right template and contribute.

Describe alternatives you've considered
NA

Additional context
I want to contribute to this repo for Hactoberfest21. Kindly assign this issue to me!