feat: Introduce auth step to verify connection

packages/web/src/graphql/mutations/index.ts

@@ -1,5 +1,6 @@
 import { CREATE_CREDENTIAL } from './create-credentials';
 import { CREATE_AUTH_LINK } from './create-auth-link';
+import { UPDATE_CREDENTIAL } from './update-credential';
 
 type Mutations = {
   [key: string]: any,
@@ -7,6 +8,7 @@ type Mutations = {
 
 const mutations: Mutations = {
   createCredential: CREATE_CREDENTIAL,
+  updateCredential: UPDATE_CREDENTIAL,
   createAuthLink: CREATE_AUTH_LINK,
 };