frontend: debug: replace custom ast node printer with ast_node_to_string

frontend/debug.c

@@ -1,4 +1,5 @@
 #include <blue/term.h>
+#include <blue/object/string.h>
 #include <ivy/asm/lex.h>
 #include <ivy/lang/ast.h>
 #include <ivy/lang/lex.h>
@@ -179,6 +180,12 @@ extern enum ivy_status print_ast_node(
 		break;
 	}
 
+	b_string *str = b_string_create();
+	ivy_ast_node_to_string(node, str);
+	b_printf("%s", b_string_ptr(str));
+	b_string_release(str);
+
+#if 0
 	b_puts(ivy_ast_node_type_to_string(node->n_type));
 
 	switch (node->n_type) {
@@ -327,6 +334,7 @@ extern enum ivy_status print_ast_node(
 	default:
 		break;
 	}
+#endif
 #if 0
 	switch (tok->t_type) {
 	case IVY_TOK_IDENT: