Validate access on ImageClass::Storage and AddressSpace::Storage

[teoxoy]

WGSL only has write-only storage textures and never write-only storage buffers.

see https://gpuweb.github.io/gpuweb/wgsl/#texture-storage and https://gpuweb.github.io/gpuweb/wgsl/#storage-buffer

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wgpu has support for read-only and read-write storage textures via Features::TEXTURE_ADAPTER_SPECIFIC_FORMAT_FEATURES.
Therefore we should add Capability::READ_ONLY_AND_READ_WRITE_STORAGE_TEXTURES that disables access validation for storage textures.

[teoxoy]

read-only and read-write storage textures have now landed in the core spec.

And #4370 is already tracking us removing write-only storage buffers.