enso/.github/PULL_REQUEST_TEMPLATE.md

### Pull Request Description

<!--
- Please describe the nature of your PR here, as well as the motivation for it.
- If it fixes an open issue, please mention that issue number here.
-->

### Important Notes

<!--
- Mention important elements of the design.
- Mention any notable changes to APIs.
-->

### Checklist

Please include the following checklist in your PR:

- [ ] The documentation has been updated if necessary.
- [ ] All code conforms to the [Scala](https://github.com/enso-org/enso/blob/main/docs/style-guide/scala.md), [Java](https://github.com/enso-org/enso/blob/main/docs/style-guide/java.md), and [Rust](https://github.com/enso-org/enso/blob/main/docs/style-guide/rust.md) style guides.
- [ ] All documentation and configuration conforms to the [markdown](https://github.com/enso-org/enso/blob/main/docs/style-guide/markdown.md) and [YAML](https://github.com/enso-org/enso/blob/main/docs/style-guide/yaml.md) style guides.
- [ ] All code has been tested where possible.