Reaction Commerce Forums

Graphql Custom plugin doesn't work

I have make following directories and files in my custom plugins and wrote my custom code there also I wrote code for registration on register.js file there. but when i start graphqlbeta it doesnot work also I cant see my custom graphql in graphqlbeta’s doc and schema too. So, Can anyone tell me what’s wrong with me ? or I need to some more tasks for this ? if yes provide me detail what i need to do futher?