Add lowering of std.view to LLVM

This CL ports the lowering of linalg.view to the newly introduced std.view.
Differences in implementation relate to std.view having slightly different semantics:
1. a static or dynamic offset can be specified.
2. the size of the (contiguous) shape is passed instead of a range.
3. static size and stride information is extracted from the memref type rather than the range.

Besides these differences, lowering behaves the same.
A future CL will update Linalg to use this unified infrastructure.

PiperOrigin-RevId: 278948853