[feat]: Add alignment support to TypeErasedComponentArray

[coderabbitai]

Objective

Add proper memory alignment support to the TypeErasedComponentArray class to handle components with over-alignment requirements.

Acceptance Criteria

• Add alignment parameter to TypeErasedComponentArray constructor
• Store component alignment alongside component size
• Update m_componentData to use aligned allocator or custom aligned buffer
• Modify insert/insertRaw methods to allocate with proper alignment
• Update shrinkIfNeeded to reallocate with alignment preservation
• Ensure swapComponents handles aligned storage correctly
• Update memoryUsage calculation for aligned storage
• Add tests for components with various alignment requirements

Dependencies

None currently identified, but this enhancement should be considered when:

• Supporting native C++ components with over-alignment in the future
• Expanding scripting support beyond .NET
• Performance optimizations requiring specific memory alignment

Technical Details

Environment: C++ ECS Component System
Components:

• engine/src/ecs/ComponentArray.hpp (TypeErasedComponentArray class declaration)
• engine/src/ecs/ComponentArray.cpp (TypeErasedComponentArray implementation)

Resources:

• std::aligned_alloc or operator new(size, alignment) for memory allocation
• Custom aligned allocator for std::vectorstd::byte
• Consider using alignas() specifications for future component types

Current implementation uses std::vectorstd::byte which only guarantees default alignment for std::byte. Components with alignas(64) or greater than alignof(std::max_align_t) may result in misaligned pointers and undefined behavior.

Backlink: Created from PR #352 discussion: #352 (comment)