Initialisation

Added the packages and files for the backend server

node_modules/graphql/validation/rules/LoneAnonymousOperationRule.d.ts

@@ -0,0 +1,13 @@
+import type { ASTVisitor } from '../../language/visitor';
+import type { ASTValidationContext } from '../ValidationContext';
+/**
+ * Lone anonymous operation
+ *
+ * A GraphQL document is only valid if when it contains an anonymous operation
+ * (the query short-hand) that it contains only that one operation definition.
+ *
+ * See https://spec.graphql.org/draft/#sec-Lone-Anonymous-Operation
+ */
+export declare function LoneAnonymousOperationRule(
+  context: ASTValidationContext,
+): ASTVisitor;