audacity/.github/pull_request_template.md

Resolves: (direct link to the issue)

(short description of the changes and the motivation to make the changes)

• The code in this pull request is licensed under "GPLv2 or any later version"*
• I made sure the code compiles on my machine
• I made sure there are no unnecessary changes in the code*
• I made sure the title of the PR reflects the core meaning of the issue you are solving*
• I made sure the commit message(s) contain a description and answer the question "Why do those changes fix that particular issue?" or "Why are those changes really necessary as improvements?"*

* indicates required