feat(core): Global Document References support (#8299)

Co-authored-by: Per-Kristian Nordnes <per.kristian.nordnes@gmail.com>

This will add support for Global Document References (GDR) in the Studio. A Global Document Reference can reference something inside another project across the user's Sanity organization.

Author: sgulseth

dev/test-studio/sanity.config.ts

@@ -267,6 +267,18 @@ export default defineConfig([
       enabled: true,
     },
   },
+  {
+    name: 'playground-staging',
+    title: 'playground (Staging)',
+    projectId: 'exx11uqh',
+    dataset: 'playground',
+    plugins: [sharedSettings()],
+    basePath: '/playground-staging',
+    apiHost: 'https://api.sanity.work',
+    auth: {
+      loginMethod: 'token',
+    },
+  },
   {
     name: 'custom-components',
     title: 'Test Studio',

dev/test-studio/schema/index.ts

@@ -96,6 +96,9 @@ import date from './standard/date'
 import datetime from './standard/datetime'
 import emails from './standard/emails'
 import files from './standard/files'
+import globalDocumentReference, {
+  globalDocumentReferenceSubtype,
+} from './standard/globalDocumentReference'
 import images, {myImage} from './standard/images'
 import numbers from './standard/numbers'
 import objects, {myObject} from './standard/objects'
@@ -289,6 +292,8 @@ export const schemaTypes = [
   conditionalFieldset,
   crossDatasetReference,
   crossDatasetSubtype,
+  globalDocumentReference,
+  globalDocumentReferenceSubtype,
   fieldGroupsWithFieldsets,
   ptReference,
   validationTest,