Initialisation

Added the packages and files for the backend server

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

@@ -0,0 +1,12 @@
+import type { ASTVisitor } from '../../language/visitor';
+import type { ASTValidationContext } from '../ValidationContext';
+/**
+ * Unique operation names
+ *
+ * A GraphQL document is only valid if all defined operations have unique names.
+ *
+ * See https://spec.graphql.org/draft/#sec-Operation-Name-Uniqueness
+ */
+export declare function UniqueOperationNamesRule(
+  context: ASTValidationContext,
+): ASTVisitor;