Add Shared Layout tab with GPU memory swizzle visualization

[leeliu103]

Implements comprehensive Shared Layout feature for visualizing GPU shared memory swizzle patterns with bank conflict analysis.

Core Implementation:

• SharedLayout: Swizzle math supporting standard phase-based and AMD rotating modes
• SharedLayoutValidator: Comprehensive validation for swizzle parameters and tensor shapes
• SharedLayoutTab: Interactive tab with real-time bank info and tooltips
• 56 new tests achieving full coverage (unit, integration, bank distribution, E2E)

Architecture Improvements:

• Refactored ParameterForm to generic component for reusability across layout types
• Added custom color provider support to CanvasRenderer for bank-based coloring
• Fractional bank capacity reporting for accurate multi-bank element modeling
• Single-render optimization matching other tab patterns

UI Features:

• AMD-focused defaults (128×64, vec=4, perPhase=2, maxPhase=4, row-major order)
• Real-time bank info display (32 banks, element capacity, segments)
• Interactive tooltips showing logical index, offset, segment, and bank assignment
• Auto-updating form with comprehensive validation

Test Coverage:

• 21 unit tests for swizzle formulas and bank calculations
• 11 integration tests for round-trip correctness
• 5 bank distribution tests
• 12 validator tests
• 7 tab controller tests
• 5 E2E tests for UI interactions