Create pull_request_template.md (#112)

* Create pull_request_template.md

* Apply suggestions from code review

Resolving suggestions so that we can merge the PR

---------

Co-authored-by: Sally <sally.makin@canonical.com>

.github/pull_request_template.md

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+<!-- You can erase any parts of this template not applicable to your Pull Request. -->
+
+
+### Description
+
+Please provide a clear and concise description of your changes. Explain **what** this pull request accomplishes and *
+*why** it is needed.
+
+---
+
+### Related Issue
+
+If this pull request addresses an existing issue, please link to it below. Use the `Fixes #<issue-number>` syntax to
+[close the issue](https://docs.github.com/en/issues/tracking-your-work-with-issues/using-issues/linking-a-pull-request-to-an-issue) automatically when the pull request is merged.
+
+Example:
+
+- Fixes: #1234
+
+---
+
+### Contributor License Agreement (CLA)
+
+By contributing to this project, you agree to the terms of
+the [Canonical Contributor License Agreement (CLA)](https://ubuntu.com/legal/contributors).  
+If you have not already signed the CLA, [please do so here](https://ubuntu.com/legal/contributors).
+
+---
+
+### Commit Message for Squash Merge
+
+We typically squash commits when merging. You can specify the commit message that should be used in this case if you wish.
+Provide the desired commit message below:
+
+[(optional) category] Brief description of changes made, and why
+
+---
+
+### Checklist
+
+- [ ] I have read and followed the [Ubuntu Server contributing guide](https://documentation.ubuntu.com/server/contributing/).
+- [ ] I have signed the [Contributor License Agreement (CLA)](https://ubuntu.com/legal/contributors).
+- [ ] My pull request is linked to an existing issue (if applicable).
+- [ ] I have tested my changes, and they work as expected.
+
+---
+
+### Additional Notes (Optional)
+
+Add any extra information or context that reviewers may need to know. This could include testing instructions,
+screenshots, or links to related discussions.
+
+---
+
+Thank you for contributing to the Ubuntu Server documentation!