refactor: update to latest codegen/cli and best practices

Author: charlypoly

codegen.ts

@@ -0,0 +1,11 @@
+import { CodegenConfig } from "@graphql-codegen/cli";
+
+const config: CodegenConfig = {
+  schema: "schema.graphql",
+  documents: "document.graphql",
+  generates: {
+    "types.ts": { plugins: ["typescript", "typescript-operations"] },
+  },
+};
+
+export default config;