feat: Event emitting part 1/N (Fulfillment) (#7391)

**What**
Add support for event emitting in the fulfillment module

**NOTE**
It does not include the review of the events for the abstract module factory if the method is not implemented in the module itself and rely on the default implementation

packages/core/medusa-test-utils/src/module-test-runner.ts

@@ -14,7 +14,7 @@ export interface SuiteOptions<TService = unknown> {
   }
 }
 
-export function moduleIntegrationTestRunner({
+export function moduleIntegrationTestRunner<TService = any>({
   moduleName,
   moduleModels,
   moduleOptions = {},
@@ -34,7 +34,7 @@ export function moduleIntegrationTestRunner({
   injectedDependencies?: Record<string, any>
   resolve?: string
   debug?: boolean
-  testSuite: <TService = unknown>(options: SuiteOptions<TService>) => void
+  testSuite: (options: SuiteOptions<TService>) => void
 }) {
   const moduleSdkImports = require("@medusajs/modules-sdk")
 
@@ -111,7 +111,7 @@ export function moduleIntegrationTestRunner({
       schema,
       clientUrl: dbConfig.clientUrl,
     },
-  } as SuiteOptions
+  } as SuiteOptions<TService>
 
   const beforeEach_ = async () => {
     await MikroOrmWrapper.setupDatabase()