mutation proof of concept

client can now send mutations and server properly executes them
TODO: implement query execution, add auth, add storage

example/client/tsconfig.json

@@ -0,0 +1,12 @@
+{
+  "compilerOptions": {
+    "target": "ES2022",
+    "module": "NodeNext",
+    "moduleResolution": "NodeNext",
+    "strict": true,
+    "skipLibCheck": true,
+    "noEmit": true,
+    "types": ["node"]
+  },
+  "include": ["*.ts"]
+}