Merge pull request #872 from open-webui/doc

Create pull_request_template.md

.github/PULL_REQUEST_TEMPLATE/pull_request_template.md

+## Pull Request Checklist
+
+- [ ] **Description:** Briefly describe the changes in this pull request.
+- [ ] **Changelog:** Ensure a changelog entry following the format of [Keep a Changelog](https://keepachangelog.com/) is added at the bottom of the PR description.
+- [ ] **Documentation:** Have you updated relevant documentation?
+- [ ] **Dependencies:** Are there any new dependencies? Have you updated the dependency versions in the documentation?
+
+---
+
+## Description
+
+[Insert a brief description of the changes made in this pull request]
+
+---
+
+### Changelog Entry
+
+[Insert your changelog entry here following the format of Keep a Changelog]
+
+### Added
+
+- [List any new features or additions]
+
+### Fixed
+
+- [List any fixes or corrections]
+
+### Changed
+
+- [List any changes or updates]
+
+### Removed
+
+- [List any removed features or files]