Add pull request and issue templates

[saturn-abhishek]

Adding issue templates and pull request template will enhance the workflow of the repository.

Use the new form of ISSUE_TEMPLATE i.e. making a folder ISSUE_TEMPLATE in .github and adding different types of .md files for different issues like bug.md, documentation.md and feature.md. A contributor can choose the type of templates whenever they make an issue.

Reference: https://docs.github.com/en/github/building-a-strong-community/about-issue-and-pull-request-templates

[docs4opensource]

I'm helping to organize a documentation event for Hacktoberfest https://organize.mlh.io/participants/events/4451-hacktoberfest-documentation-meetup-kick-off-event - we'd like to work on this once the event opens.

[utkarsh4321]

Hii i also want to help into this can I also help you in documentation.

[Red-0111]

hi @abhisheknaiidu please assign i will try my best

[Mitch4sho]

Can I be assigned to this, please?