Initialisation

Added the packages and files for the backend server

node_modules/graphql/error/index.d.ts

@@ -0,0 +1,8 @@
+export { GraphQLError, printError, formatError } from './GraphQLError';
+export type {
+  GraphQLErrorOptions,
+  GraphQLFormattedError,
+  GraphQLErrorExtensions,
+} from './GraphQLError';
+export { syntaxError } from './syntaxError';
+export { locatedError } from './locatedError';