Initialisation

Added the packages and files for the backend server

node_modules/@apollo/utils.createhash/README.md

@@ -0,0 +1,12 @@
+# createHash
+
+Equivalent to Node.js's `crypto.createHash`. Uses the Node.js builtin if
+present, otherwise it falls back the the `sha.js` package's implementation.
+
+## Usage
+
+```ts
+import { createHash } from "@apollo/utils.createhash";
+
+createHash("sha256").update("foo").digest("hex");
+```