chore(): Reorganize modules (#7210)

**What**
Move all modules to the modules directory

packages/modules/fulfillment/integration-tests/__fixtures__/events.ts

@@ -0,0 +1,24 @@
+import { EventBusTypes } from "@medusajs/types"
+
+export function buildExpectedEventMessageShape(options: {
+  eventName: string
+  action: string
+  object: string
+  eventGroupId?: string
+  data: any
+  options?: Record<string, unknown>
+}): EventBusTypes.Message {
+  return {
+    eventName: options.eventName,
+    body: {
+      metadata: {
+        action: options.action,
+        eventGroupId: options.eventGroupId,
+        service: "fulfillment",
+        object: options.object,
+      },
+      data: options.data,
+    },
+    options: options.options,
+  }
+}