Relative target using CSS selector should build a target using a CSS selector

[Galad]

Currently a relative target resolve the first target and then use it as the search context.
If both targets use CSS selectors, (By.Class, Id, CssSelector, Name, etc.), it is possible to create an optimized target that use a single CSS selector.

For instance, given the targets:

var item = Target.The("item").LocatedBy(By.ClassName("item"));
var name = Target.The("name").LocatedBy(By.ClassName("name"));
var itemName = name.RelativeTo(item).

The itemName should use the CSS selector ".item .name".