[SPIRV][DirectX] Add reserved (sparse) texture support

[inbelic]

Required for testing of sparse texture reads with CheckAccessFullyMapped on Texture2D resources with controllable tile mapping.

Current Status: DirectX supports reserved resources for buffers only. Vulkan queries sparse features but does not use them.

The first step will be to refine the following acceptance criteria for refinement/estimation.

AC:

• Allow YAML test configuration to specify per-tile mapping (e.g. TileMap: [true, true, false, false])
• DX: Create sparse texture heap and UpdateTileMappings() with per-tile coordinates
• DX: Handle texture data upload for partially mapped tiles (per-tile-region copies)
• VK: Enable sparse[BindingResidencyImage2D] to create sparse images and bind tiles
• VK: Enable shaderResourceResidency for CheckAccessFullyMapped/OpImageSparseRead
• Add independent testing of functionality