Refactor MapNeighborhoodWithCenter and MapNeighborhood

`MapNeighborhood`: Currently this is a `BinaryComputerOp` which takes some `RAI` as first and `Shape` as second input. However, `Shape` is not a _special_ parameter, so it should be passed via `@Parameter` args only. Furthermore, `MapNeighborhood` can be lazy, which means it's only a `FunctionOp` which returns a `View` on the input data which can be copied in parallel to some `output`.

`MapNeighborhoodWithCenter`: This is a mapping, where the inner `UnaryComputerOp` takes `Pair` as it's input type.