feat: Convert all app files to JS

packages/backend/src/apps/discord/common/add-auth-header.js

@@ -1,6 +1,4 @@
-import { TBeforeRequest } from '@automatisch/types';
-
-const addAuthHeader: TBeforeRequest = ($, requestConfig) => {
+const addAuthHeader = ($, requestConfig) => {
   const { tokenType, botToken } = $.auth.data;
   if (tokenType && botToken) {
     requestConfig.headers.Authorization = `Bot ${botToken}`;

packages/backend/src/apps/discord/common/get-current-user.js

@@ -1,6 +1,4 @@
-import { IGlobalVariable, IJSONObject } from '@automatisch/types';
-
-const getCurrentUser = async ($: IGlobalVariable): Promise<IJSONObject> => {
+const getCurrentUser = async ($) => {
   const response = await $.http.get('/users/@me');
   const currentUser = response.data;