making clion work and trying out a change in what the platform returns

.gitignore

@@ -28,3 +28,4 @@ migrate_working_dir/
 .dart_tool/
 .packages
 build/
+cmake-build-*/

linux/multimedia_plugin.cc

@@ -38,8 +38,7 @@ static void multimedia_plugin_handle_method_call(
 FlMethodResponse* get_platform_version() {
   struct utsname uname_data = {};
   uname(&uname_data);
-  g_autofree gchar *version = g_strdup_printf("Linux %s", uname_data.version);
-  g_autoptr(FlValue) result = fl_value_new_string(version);
+  g_autoptr(FlValue) result = fl_value_new_string("helloworld");
   return FL_METHOD_RESPONSE(fl_method_success_response_new(result));
 }