Parse raw elements, attributes, and web components in rsx (#2655)

* parse raw elements and attributes in rsx

---------

Co-authored-by: Jonathan Kelley <jkelleyrtp@gmail.com>

packages/rsx/src/element.rs

@@ -358,7 +358,8 @@ impl ToTokens for ElementName {
 
 impl Parse for ElementName {
     fn parse(stream: ParseStream) -> Result<Self> {
-        let raw = Punctuated::<Ident, Token![-]>::parse_separated_nonempty(stream)?;
+        let raw =
+            Punctuated::<Ident, Token![-]>::parse_separated_nonempty_with(stream, parse_raw_ident)?;
         if raw.len() == 1 {
             Ok(ElementName::Ident(raw.into_iter().next().unwrap()))
         } else {
@@ -607,3 +608,14 @@ fn diagnositcs() {
 
     let _parsed: Element = syn::parse2(input).unwrap();
 }
+
+#[test]
+fn parses_raw_elements() {
+    let input = quote::quote! {
+        use {
+            "hello"
+        }
+    };
+
+    let _parsed: Element = syn::parse2(input).unwrap();
+}