Feat: massive changes to definition of components

This change switches back to the original `ctx<props>` syntax for
commponents. This lets lifetime elision to remove the need to match
exactly which lifetime (props or ctx) gets  carried to the output. As
such, `Props` is currently required to be static. It *is* possible to
loosen this restriction, and will be done in the future, though only
through adding metadata about the props through the Props derive
macro. Implementing the IS_STATIC trait is unsafe, so the derive macro
will do it through some heuristics.

For now, this unlocks sharing vnodes from parents to children, enabling
pass-thru components, fragments, portals, etc.

packages/core/README.md

@@ -28,7 +28,7 @@ We have big goals for Dioxus. The final implementation must:
 ## Optimizations
 
 - Support a pluggable allocation strategy that makes VNode creation **very** fast
-- Support lazy DomTrees (ie DomTrees that are not actually created when the html! macro is used)
+- Support lazy VNodes (ie VNodes that are not actually created when the html! macro is used)
 - Support advanced diffing strategies (patience, Meyers, etc)
 
 ## Design Quirks