Move testing utilities to tito/tools for better software architecture

- Move testing utilities from tinytorch/utils/testing.py to tito/tools/testing.py
- Update all module imports to use tito.tools.testing
- Remove testing utilities from core TinyTorch package
- Testing utilities are development tools, not part of the ML library
- Maintains clean separation between library code and development toolchain
- All tests continue to work correctly with improved architecture

docs/testing_pattern.md

@@ -0,0 +1,94 @@
+# TinyTorch Standardized Testing Pattern
+
+## Overview
+
+All TinyTorch modules use a consistent testing pattern that ensures:
+- **Consistent output format** across all modules
+- **No code duplication** - shared utilities handle formatting
+- **Easy test registration** - just register functions and run
+- **Comprehensive reporting** - detailed pass/fail breakdown
+
+## Usage Pattern
+
+### 1. Import the Testing Utilities
+
+```python
+import sys
+import os
+
+# Add utils to path
+sys.path.append(os.path.join(os.path.dirname(__file__), '..', 'utils'))
+from testing import create_test_runner
+```
+
+### 2. Write Your Test Functions
+
+```python
+def test_feature_a():
+    """Test feature A functionality."""
+    # Your test code here
+    assert something_works(), "Feature A should work"
+    print("✅ Feature A tests passed!")
+
+def test_feature_b():
+    """Test feature B functionality."""
+    # Your test code here
+    assert something_else_works(), "Feature B should work"
+    print("✅ Feature B tests passed!")
+```
+
+### 3. Register and Run Tests
+
+```python
+if __name__ == "__main__":
+    # Create test runner for this module
+    test_runner = create_test_runner("YourModule")
+    
+    # Register all tests
+    test_runner.register_test("Feature A", test_feature_a)
+    test_runner.register_test("Feature B", test_feature_b)
+    
+    # Run all tests with consistent output
+    success = test_runner.run_all_tests()
+```
+
+## Standard Output Format
+
+Every module will produce identical output:
+
+```
+🔬 Running YourModule Module Tests...
+==================================================
+🧪 Testing Feature A... ✅ PASSED
+🧪 Testing Feature B... ✅ PASSED
+
+============================================================
+🎯 YOURMODULE MODULE TESTING COMPLETE
+============================================================
+🎉 CONGRATULATIONS! All tests passed!
+
+✅ YourModule Module Status: 2/2 tests passed (100%)
+
+📊 Detailed Results:
+   Feature A: ✅ PASSED
+   Feature B: ✅ PASSED
+
+📈 Progress: YourModule Module ✓ COMPLETE
+
+🚀 Ready for the next module!
+```
+
+## Benefits
+
+1. **Consistency**: All modules have identical testing output
+2. **No Duplication**: Testing utilities are shared across modules
+3. **Easy Maintenance**: Changes to format only need to be made in one place
+4. **Scalable**: Works for any number of tests and modules
+5. **Professional**: Clean, standardized output suitable for educational use
+
+## Implementation
+
+- **Shared utilities**: `modules/source/utils/testing.py`
+- **Test registration**: Each module registers its tests
+- **Consistent format**: All modules get identical summary output
+- **Error handling**: Detailed error reporting for failed tests