Detect Redundant Constructor Assignments

# 🧠 Concept  
Detect unnecessary constructor storage writes.

## ⚠️ Problem  
Redundant assignments waste deployment gas.

## 📁 Implementation Scope  
- `rules/optimization/deployment/`

## ✅ Requirements  
- Detect duplicate constructor initialization  
- Suggest optimization  

## 🎯 Acceptance Criteria  
- [ ] Redundant constructor assignments flagged  