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/web/examples/weather.rs

@@ -1,4 +1,4 @@
-//! basic example that renders a simple domtree to the page :)
+//! basic example that renders a simple VNode to the page :)
 //!
 //!
 //!
@@ -9,7 +9,7 @@ fn main() {
     wasm_logger::init(wasm_logger::Config::new(log::Level::Debug));
     console_error_panic_hook::set_once();
 
-    wasm_bindgen_futures::spawn_local(WebsysRenderer::start(|ctx, _| {
+    wasm_bindgen_futures::spawn_local(WebsysRenderer::start(|ctx| {
         ctx.render(html! {
             <div>
                 <div class="flex items-center justify-center flex-col">