Add github pypi release checklist and news

Author: bobleesj

.github/ISSUE_TEMPLATE/general_issue.md

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+---
+name: General issue
+about: ""
+title: ""
+labels: ""
+assignees: ""
+---

.github/ISSUE_TEMPLATE/release_checklist.md

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+---
+name: Release
+about: Checklist and communication channel for PyPI and GitHub release
+title: "Ready for <version-number> PyPI/GitHub release"
+labels: "release"
+assignees: ""
+---
+
+**Release checklist for GitHub contributors**
+
+- [ ] All PRs/issues are resolved for the release version.
+- [ ] The latest version of [cookiecutter](https://github.com/Billingegroup/cookiecutter) is used. Ensure `.github/workflows/build-wheel-release-upload.yml` is available.
+- [ ] All the badges on the README are passing.
+- [ ] Locally rendered documentation contains all appropriate pages, including API references, tutorials, and extensions.
+- [ ] Installation instructions in the documentation and on the website (e.g., diffpy.org) are checked and updated.
+- [ ] Grammar and writing quality have been checked.
+- [ ] License information is verified. If you are unsure, please comment below.
+
+Please mention @sbillinge when you are ready for release. Include any additional comments necessary, such as version information and details about the pre-release.

news/issue-template.rst

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+**Added:**
+
+* Added issue template for PyPI/GitHub release
+
+**Changed:**
+
+* <news item>
+
+**Deprecated:**
+
+* <news item>
+
+**Removed:**
+
+* <news item>
+
+**Fixed:**
+
+* <news item>
+
+**Security:**
+
+* <news item>