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-macro/src/rsxtemplate.rs

@@ -22,7 +22,19 @@ impl Parse for RsxTemplate {
     fn parse(s: ParseStream) -> Result<Self> {
         if s.peek(LitStr) {
             use std::str::FromStr;
+
             let lit = s.parse::<LitStr>()?;
+            let g = lit.span();
+            let mut value = lit.value();
+            if value.ends_with('\n') {
+                value.pop();
+                if value.ends_with('\r') {
+                    value.pop();
+                }
+            }
+            let lit = LitStr::new(&value, lit.span());
+
+            // panic!("{:#?}", lit);
             match lit.parse::<crate::rsxt::RsxRender>() {
                 Ok(r) => Ok(Self { inner: r }),
                 Err(e) => Err(e),