Feature: add createCustomField resolver (#1698)

* Feature: add createCustomField resolver

* update mocks

* fix import

* invalidate workspace datasource cache after migration

* fix typo

server/src/tenant/metadata/metadata.resolver.spec.ts

@@ -0,0 +1,26 @@
+import { Test, TestingModule } from '@nestjs/testing';
+
+import { MetadataResolver } from './metadata.resolver';
+import { MetadataService } from './metadata.service';
+
+describe('MetadataResolver', () => {
+  let resolver: MetadataResolver;
+
+  beforeEach(async () => {
+    const module: TestingModule = await Test.createTestingModule({
+      providers: [
+        MetadataResolver,
+        {
+          provide: MetadataService,
+          useValue: {},
+        },
+      ],
+    }).compile();
+
+    resolver = module.get<MetadataResolver>(MetadataResolver);
+  });
+
+  it('should be defined', () => {
+    expect(resolver).toBeDefined();
+  });
+});