feat: toml lvalues support

src/coders/json.cpp

@@ -178,7 +178,8 @@ dv::value Parser::parseObject() {
             skipLine();
             continue;
         }
-        std::string key = parseName();
+        expect('"');
+        std::string key = parseString('"');
         char next = peek();
         if (next != ':') {
             throw error("':' expected");