Add PR template

Author: eileen-xue

.github/pull_request_template.md

@@ -0,0 +1,45 @@
+## Description
+
+<!-- What does this PR do? Why is this change needed? -->
+
+
+## Type of change
+
+<!-- Check all that apply -->
+
+- [ ] Bug fix
+- [ ] New feature / tool addition
+- [ ] Version update (tool or image)
+- [ ] Configuration change (Ansible, Packer, OpenStack)
+- [ ] Documentation only
+- [ ] Other: <!-- describe -->
+
+---
+
+## Version updates
+
+<!-- If this PR updates any tool versions in build/ansible/vars/tool-versions.yml,
+     list them here. If no version changes, write "N/A". -->
+
+| Tool | Old version | New version |
+|------|-------------|-------------|
+|      |             |             |
+
+**Image version** (`build/openstack-bioshell.pkr.hcl`)
+- [ ] Bumped `image_version` to reflect changes in this PR
+- [ ] No image version bump needed (docs/config only)
+
+---
+
+## Changelog
+
+- [ ] Updated `CHANGELOG.md` with a summary of changes under the correct version heading
+- [ ] No changelog entry needed (e.g. internal refactor, typo fix)
+
+---
+
+## Checklist
+
+- [ ] My changes follow the existing conventions in this repo
+- [ ] I have reviewed the diff and removed any unintended changes
+- [ ] Any new tools or version pins are documented in the relevant Ansible vars file