Add refactor pull request template

Author: anshumanjadiya1102

.github/PULL_REQUEST_TEMPLATE.md/refactor_pr.md

@@ -0,0 +1,20 @@
+---
+name: 🧱 Refactor / Code Cleanup
+about: Internal improvements without changing functionality
+title: "[REFACTOR] "
+labels: ["refactor", "maintenance"]
+---
+
+### 🧠 Purpose
+Why this refactor or cleanup is needed.
+
+### 🔍 Changes Made
+Summarize what was refactored.
+
+### 🧩 Verification
+Explain how you verified no behavior was changed.
+
+### ✅ Checklist
+- [ ] Code is cleaner or more efficient
+- [ ] No functionality changes
+- [ ] Builds and tests pass