Implement native LSL parser runtime (#82)

tests/compat/tests/extension_shims.rs

@@ -26,7 +26,7 @@ async fn compile_rlv_calls(
         .await;
 }
 
-fn compile_parser_call(parser: &Parser) {
+fn compile_parser_call(parser: &mut Parser) {
     let _ = parser.parse_with_string(String::new());
 }
 
@@ -65,11 +65,8 @@ fn extension_flows_have_typed_callable_signatures() {
 }
 
 #[test]
-fn extension_constructors_fail_with_catalog_ids() {
-    assert_eq!(
-        member_id(YyParser::new()),
-        "M:LibreMetaverse.LslTools.YyParser.#ctor"
-    );
+fn extension_constructors_have_expected_native_or_failure_behavior() {
+    assert!(YyParser::new().is_ok());
     assert_eq!(
         member_id(RlvActionCallbacksDefault::new()),
         "M:LibreMetaverse.RLV.RlvActionCallbacksDefault.#ctor"