Fusing multiple compute operations into one

[ozgrakkurt]

Hey!

For example arr0+arr1*arr2 can be fused into a single kernel to avoid allocation and which might even end up being vectorized into a fmadd SIMD instruction. Also for something like a && b && c could be easily fused to avoid intermediary allocation, I guess this might be common in filter operations.

I opened the same discussion for datafusion here: apache/datafusion#5919

cc: @jorgecarleitao