Detect Large Memory Allocations

# 🧠 Concept  
Detect excessive memory allocation patterns.

## ⚠️ Problem  
Large memory usage increases execution costs.

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

## ✅ Requirements  
- Detect oversized arrays/structures  
- Suggest optimizations  

## 🎯 Acceptance Criteria  
- [ ] Large memory allocations detected  