feat(ynab): add you need a budget app integration

packages/backend/src/apps/you-need-a-budget/common/add-auth-header.js

@@ -0,0 +1,9 @@
+const addAuthHeader = ($, requestConfig) => {
+  if ($.auth.data?.accessToken) {
+    requestConfig.headers.Authorization = `${$.auth.data.tokenType} ${$.auth.data.accessToken}`;
+  }
+
+  return requestConfig;
+};
+
+export default addAuthHeader;

packages/backend/src/apps/you-need-a-budget/common/get-current-user.js

@@ -0,0 +1,6 @@
+const getCurrentUser = async ($) => {
+  const { data: currentUser } = await $.http.get('/user');
+  return currentUser.data.user.id;
+};
+
+export default getCurrentUser;