Create Issue Template

[BElifb]

We decided to create an issue template in Meeting#addlater.
To Do:

• Create a general purpose issue template to provide uniformity.

Deadline: 10.04.2022 @23.59

[BElifb]

• Created templates for General Purpose, Group Checklist and Meeting Notes. Here's the wiki page.
• Waiting to actually add the templates to Issue Page.

[BElifb]

• Added reviewers

[BElifb]

• Created 3 yml files for the templates. Pushed to a new branch, created pull request. See #84 .

[BElifb]

• Branch merged and deleted.