chore: add pull request template (#13)

Author: Ricbet

.github/PULL_REQUEST_TEMPLATE.md

@@ -0,0 +1,21 @@
+### Types
+
+<!-- Please delete this line and the unselected items below to keep the PR description clean -->
+
+- [ ] 🎉 New Features
+- [ ] 🐛 Bug Fixes
+- [ ] 📚 Documentation Changes
+- [ ] 💄 Code Style Changes
+- [ ] 💄 Style Changes
+- [ ] 🪚 Refactors
+- [ ] 🚀 Performance Improvements
+- [ ] 🏗️ Build System
+- [ ] ⏱ Tests
+- [ ] 🧹 Chores
+- [ ] Other Changes
+
+### Background or solution
+<!-- Additional content -->
+<!-- 补充额外内容 -->
+
+### Changelog