Feat(auth): Rename authentication to auth (#6229)

**What**
- rename `authenticationModule` -> `authModule`

packages/auth/integration-tests/__fixtures__/auth-user/index.ts

@@ -0,0 +1,34 @@
+import { SqlEntityManager } from "@mikro-orm/postgresql"
+import { AuthUser } from "@models"
+
+export async function createAuthUsers(
+  manager: SqlEntityManager,
+  userData: any[] = [
+    {
+      id: "test-id",
+      entity_id: "test-id",
+      provider: "manual",
+    },
+    {
+      id: "test-id-1",
+      entity_id: "test-id-1",
+      provider: "manual",
+    },
+    {
+      entity_id: "test-id-2",
+      provider: "store",
+    },
+  ]
+): Promise<AuthUser[]> {
+  const authUsers: AuthUser[] = []
+
+  for (const user of userData) {
+    const authUser = manager.create(AuthUser, user)
+
+    authUsers.push(authUser)
+  }
+
+  await manager.persistAndFlush(authUsers)
+
+  return authUsers
+}