Create PULL_REQUEST_TEMPLATE.md (#10)

.github/PULL_REQUEST_TEMPLATE.md

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+# ✨ Description
+
+Please provide a brief summary of the changes, relevant motivation, and context.  
+Include any related issue numbers or links to discussions, and explain why this change is necessary.
+
+Closes # <!-- Insert issue number here, if applicable -->
+
+## 🔍 Type of change
+
+Select all that apply:
+
+- [ ] 🐛 **Bug fix** (non-breaking change that addresses a specific issue)
+- [ ] 🚀 **New feature** (non-breaking change that adds functionality)
+- [ ] ⚠️ **Breaking change** (a change that could affect existing functionality)
+- [ ] 📈 **Performance improvement/optimization** (improves speed, memory usage, or efficiency)
+- [ ] 🛠️ **Code refactor** (non-functional changes that improve code readability, structure, etc.)
+- [ ] 📦 **Dependency bump** (updates dependencies, including Dockerfile or package changes)
+- [ ] 📝 **Documentation change** (updates documentation, including new content or typo fixes)
+- [ ] 🔧 **Infrastructure/Build change** (affects build process, CI/CD, or dependencies)
+
+## 📝 Changes
+
+List the key changes introduced in this PR:
+
+1. Change A
+2. Change B
+
+# ✅ Checklist
+
+Make sure the following tasks are completed before submitting the PR:
+
+### General:
+- [ ] 📜 I have read and followed the [contributing guidelines](CONTRIBUTING.md).
+- [ ] 🎉 The functionality is complete, and I have tested the changes.
+- [ ] 📝 I have updated the documentation if needed.
+- [ ] ⚠️ The change does not introduce any new issues (e.g., runtime warnings, type checker errors, linting problems, unhandled edge cases).
+- [ ] 🧩 I have commented my code, especially in hard-to-understand areas.
+
+### Dependencies and Configuration:
+- [ ] 🐋 I have updated the Docker configuration or dependencies, if applicable.
+- [ ] 🔄 I have ensured compatibility with the existing setup after dependency changes.
+
+### Testing:
+- [ ] 🧪 I have added or updated tests to cover my changes.
+- [ ] ✔️ New and existing tests pass locally with my changes.
+- [ ] 🚦 I have tested these changes on GPUs and verified training stability.
+- [ ] 🏋️ I have tested the changes on realistic training workloads, if applicable.
+
+### Performance Impact:
+- [ ] 📊 I have run benchmarks where applicable to evaluate the performance impact.
+- [ ] ✅ The benchmarks show no performance regression.
+- [ ] 🚀 The benchmarks indicate a potential performance improvement.
+- [ ] ⚠️ The benchmarks indicate a potential performance degradation.
+- [ ] 📈 I have provided benchmark results and detailed any performance impact below, if applicable.
+
+# 📊 Performance Impact Details
+
+If there is any impact on performance, describe it and provide benchmark results, if applicable:
+
+---
+
+# 📝 Additional Notes
+
+Include any additional context, information, or considerations here, such as known issues, follow-up tasks, or backward compatibility concerns.