Initialisation

Added the packages and files for the backend server

node_modules/graphql/error/syntaxError.d.ts

@@ -0,0 +1,11 @@
+import type { Source } from '../language/source';
+import { GraphQLError } from './GraphQLError';
+/**
+ * Produces a GraphQLError representing a syntax error, containing useful
+ * descriptive information about the syntax error's position in the source.
+ */
+export declare function syntaxError(
+  source: Source,
+  position: number,
+  description: string,
+): GraphQLError;