Suggest using `next_multiple_of()` instead of `((x + N-1) / N) * N` or `(x + N-1) & !(N-1)` (for powers of two)

### What it does

See title.

Similar for `x.is_multiple_of(y)` and `x % y == 0`.

### Advantage

More readable and overflow checks

### Drawbacks

_No response_

### Example

```rust
let x = ((x + 3) / 4) * 4;
let y = (y + 3) & !3;
let z = z % 4 == 0;
```

Could be written as:

```rust
let x = x.next_multiple_of(4);
let y = y.next_multiple_of(4);
let z = z.is_multiple_of(4);
```