Docs: update the issue template

[officeneerajsaini]

Describe the bug
We should update the issue template. We can add more new things like emoji, tags for issues, and titles for every issue, like Docs:, Feat:, Bug:. This way, we can understand the purpose of the issue raised by just seeing the title.

Expected behavior
We can see all issues with a good title so we can easily understand the purpose for which the issue was created.

Screenshots

Desktop (please complete the following information):

• OS: Ubuntu [Linux}
• Browser chrome
• Version : 20.04.6 LTS

[officeneerajsaini]

@bishalde , I'd like to work on this issue under GSSOC. Could you please add the necessary label and tag to the issue and assign it to me?