feat: namespaced attributes

this commit adds namespaced attributes. This lets us support attribute groups, and thus, inline styles.

This namespaced attribute stuff is only available for styles at the moment, though it theoretically could be enabled for any other attributes.

README.md

@@ -120,8 +120,8 @@ Dioxus is heavily inspired by React, but we want your transition to feel like an
 | Fragments               | ✅      | ✅     | rsx! can return multiple elements without a root      |
 | Manual Props            | ✅      | ✅     | Manually pass in props with spread syntax             |
 | Controlled Inputs       | ✅      | ✅     | stateful wrappers around inputs                       |
+| CSS/Inline Styles       | ✅      | ✅     | syntax for inline styles/attribute groups[2]          |
 | NodeRef                 | 🛠      | ✅     | gain direct access to nodes [1]                       |
-| CSS/Inline Styles       | 🛠      | ✅     | syntax for inline styles/attribute groups[2]          |
 | 1st class global state  | 🛠      | ✅     | redux/recoil/mobx on top of context                   |
 | Suspense                | 🛠      | ✅     | schedule future render from future/promise            |
 | Cooperative Scheduling  | 🛠      | ✅     | Prioritize important events over non-important events |