[mlir][sparse] support integral types i32,i16,i8 for *numerical* values

[mlir][sparse] support integral types i32,i16,i8 for *numerical* values

Some sparse matrices operate on integral values (in contrast with the common
f32 and f64 values). This CL expands the compiler and runtime support to deal
with several common type combinations.

Reviewed By: bixia

Differential Revision: https://reviews.llvm.org/D99999