[Fix] Addition in issue template

[Anshika-Jain02]

Description:

I noticed that the repository does not have an appropriate issue template.

Issue Template: I want to add some more points into your issue template like styling changes, documentation etc

**Please assign this issue to me under Gssoc'23 @GouravSardana **

[github-actions[bot]]

Hi👋 thanks for creating your first issue for IOSF, Will get back to you soon !.

[aditya-bagla]

Hi , Aditya Bagla ( GSSOC'23 contributor ) I would like to contribute on this issue . Can you please assign me ?

[GouravSardana]

Done @Anshika-Jain02