feat(parser): add classdata to unhandled parse errors (#691)

src/parser/parser.ts

@@ -95,7 +95,8 @@ let ERROR_HANDLER: ParserErrorHandler = ({ classname, ...context }: ParserError)
           new InnertubeError(
             `Something went wrong at ${classname}!\n` +
             `This is a bug, please report it at ${Platform.shim.info.bugs_url}`, {
-              stack: context.error.stack
+              stack: context.error.stack,
+              classdata: JSON.stringify(context.classdata, null, 2)
             }
           )
         );