Fix: #2604, Fix: #2240, Fix: #2341, Fix #1355 - Better error handling and and spaces handling in autofmt (#2736)

* add new autofmt sample
* Feat: implement rustfmt::skip support for rsx
* generally improve error handling with better expect messages
* wip: nested rsx formatting and expression formatting
* nested rsx formatting works
* collapse autofmt crate
* cast indent through macros
* use proper whitespace
* no more eating comments!
* Use proper error handling

packages/autofmt/tests/error_handling.rs

@@ -0,0 +1,21 @@
+#[test]
+fn no_parse() {
+    let src = include_str!("./partials/no_parse.rsx");
+    assert!(syn::parse_file(src).is_err());
+}
+
+#[test]
+fn parses_but_fmt_fails() {
+    let src = include_str!("./partials/wrong.rsx");
+    let file = syn::parse_file(src).unwrap();
+    let formatted = dioxus_autofmt::try_fmt_file(src, &file, Default::default());
+    assert!(&formatted.is_err());
+}
+
+#[test]
+fn parses_and_is_okay() {
+    let src = include_str!("./partials/okay.rsx");
+    let file = syn::parse_file(src).unwrap();
+    let formatted = dioxus_autofmt::try_fmt_file(src, &file, Default::default()).unwrap();
+    assert_ne!(formatted.len(), 0);
+}