Add visual tests for Dioxus

- [ ] `placement`
- [ ] `relative`
- [ ] `transform`
- [ ] `border`
- [ ] `scroll`
- [ ] `decimal-size`
- [ ] `table`
- [ ] `scrollbars`
- [ ] `shift`
- [ ] `flip`
- [ ] `size`
- [ ] `arrow`
- [ ] `offset`
- [ ] `hide`
- [ ] `autoPlacement`
- [ ] `inline`
- [ ] `autoUpdate`
- [ ] `shadow-DOM`
- [ ] `containing-block`
- [ ] `virtual-element`
- [ ] `perf`
- [ ] `iframe`
- [ ] `top-layer`