Hbmpim dialect

[h4midf]

Structure of the system:
Although the simulator is configurable, we will stick to Samsung's hbmpim paper parameters. With that said, in a single call to the device, a maximum of 16 banks, 64 channels, 1 rank, and 8 GRF can be configured.

cnm.workgroup { cnm.physical_dims = ["banks", "channels", "ranks", "grf"] } : !cnm.workgroup<16x64x1x8>

At the moment, the simulator implements different APIs for writing the data to the device for different operations. For example, preloadNoReplacement and preloadGemv function calls are used for elementWiseOperations and GEMV kernels. Because of this, the cnm.scatter is not directly lowered in the conversion pass; instead, depending on the operation in the launch block, the respective function is created.
Also, for all of this to work, we should limit the launch block to only a single operation.