Include 'scanner.c' in the python binding sources

Author: Bzero

setup.py

@@ -36,7 +36,7 @@ def get_tag(self):
             sources=[
                 "bindings/python/tree_sitter_typst/binding.c",
                 "src/parser.c",
-                # NOTE: if your language uses an external scanner, add it here.
+                "src/scanner.c",
             ],
             extra_compile_args=(
                 ["-std=c11"] if system() != 'Windows' else []