fix: allow pass FieldConfig.type as a Thunk (function) without Error

Author: nodkz

src/__tests__/__testSchema__/query.auth/isLoggedIn.ts

@@ -1,4 +1,4 @@
 export default {
-  type: 'Boolean',
+  type: (sc) => sc.get('Boolean'),
   resolve: () => true,
 };

src/astToSchema.ts

@@ -224,6 +224,9 @@ function isSomeOutputTypeDefinition(type: any): boolean {
   } else if (Array.isArray(type)) {
     // type: ['String']
     return isSomeOutputTypeDefinition(type[0]);
+  } else if (isFunction(type)) {
+    // pass thunked type without internal checks
+    return true;
   } else {
     // type: 'type User { name: String }'
     return isComposeOutputType(type);