Use linalg.view_slice in tiling and fusion

Use linalg.view_slice in tiling and fusion

This CL makes use of view_slice in tiling and fusion.
Using a higher level IR element greatly simplifies the IR produced during tiling and fusion.
Lowering to LLVM is updated to first translate view_slice into a sequence of dim, range and cmpi.
This level will also be useful when lowering to affine.

PiperOrigin-RevId: 254767814