[DT] Implement host/serialized encoding interface for GPUEncodingLayoutAttr

[hanhanW]

The CPU and VMVX attributes finished most of the implementation for encoding specialization. The remaining task is adding an e2e test, and I'm working on it.

On GPU side, the path is still experimental, so I did not add the support yet. We are missing the implementation for EncodingLayoutAttrInterface and SerializedEncodingLayoutAttrInterface.

In the data-tiling, we have MaterializeEncodingInfo struct to describe the layouts. Different from CPU backends, GPU has "swizzle". This field can be ignored in the interface implementation because it describes the layout of inner tiles, while it does not impact any storage size calculation. Thus, the implementation would be very similar to CPU attributes.

Here is one of examples that what is implemented for CPU backends: #19686

For more information, please take a look at https://hackmd.io/@hwPnnvLBTB-JGVMeh-bCEA/r1dLRr1Fyl. The last section has the demo of how it works in CPU and GPU.

[jtuyls]

@hanhanW I tried implementing the EncodingLayoutAttrInterface in #20027. Could you review it?