set limit & offset together

so i cant set limit & offset together, maybe we can add a fn pagination(limit, offset) -> Result?
```rust
pub fn pagination(self, limit: u32, offset: u32) -> Result<'a> {
        Result {
            data: self.into(),
            limit: Some(clause::Limit(limit)),
            offset: Some(clause::Offset(offset)),
            ..Default::default()
        }
}
```