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/recoil/examples/callback.rs

@@ -19,7 +19,7 @@ fn update_title(api: &RecoilApi) {
     }
 }
 
-static App: FC<()> = |ctx, _| {
+static App: FC<()> = |ctx| {
     let title = use_read(ctx, &TITLE);
     let next_light = use_recoil_api(ctx, |api| move |_| update_title(&api));