feat: add error information in the progress callback

This allows users to bail parsing if an error was *definitely* detected
using the progress callback, as all possible stack versions have a
non-zero error cost.

Co-authored-by: Amaan Qureshi <amaanq12@gmail.com>

lib/binding_rust/bindings.rs

@@ -82,6 +82,7 @@ pub struct TSInput {
 pub struct TSParseState {
     pub payload: *mut ::core::ffi::c_void,
     pub current_byte_offset: u32,
+    pub has_error: bool,
 }
 #[repr(C)]
 #[derive(Debug, Copy, Clone)]

lib/binding_rust/lib.rs

@@ -147,6 +147,11 @@ impl ParseState {
     pub const fn current_byte_offset(&self) -> usize {
         unsafe { self.0.as_ref() }.current_byte_offset as usize
     }
+
+    #[must_use]
+    pub const fn has_error(&self) -> bool {
+        unsafe { self.0.as_ref() }.has_error
+    }
 }
 
 /// A stateful object that is passed into a [`QueryProgressCallback`]