Move `GPUMemoryLayout` and `StorageType` to `utils/` (#4180)

Summary:
Pull Request resolved: https://github.com/pytorch/executorch/pull/4180

```
find . -type f -exec sed -i 's/vkapi::kBuffer/utils::kBuffer/g' {} +
find . -type f -exec sed -i 's/vkapi::kTexture/utils::kTexture/g' {} +
find . -type f -exec sed -i 's/vkapi::kWidthPacked/utils::kWidthPacked/g' {} +
find . -type f -exec sed -i 's/vkapi::kHeightPacked/utils::kHeightPacked/g' {} +
find . -type f -exec sed -i 's/vkapi::kChannelsPacked/utils::kChannelsPacked/g' {} +
find . -type f -exec sed -i 's/vkapi::to_packed_dim_nchw_offset/utils::to_packed_dim_nchw_offset/g' {} +
find . -type f -exec sed -i 's/vkapi::GPUMemoryLayout/utils::GPUMemoryLayout/g' {} +
find . -type f -exec sed -i 's/vkapi::StorageType/utils::StorageType/g' {} +
```
ghstack-source-id: 233085713
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Reviewed By: SS-JIA

Differential Revision: D59527913

fbshipit-source-id: 8b12e119cfa9675671ee627e165fb24cbc8c3f76