feat: changed backend-pg to backend

backend/vitest.e2e.config.ts

@@ -0,0 +1,17 @@
+import tsconfigPaths from "vite-tsconfig-paths"; // only if you are using custom tsconfig paths
+import { defineConfig } from "vitest/config";
+
+export default defineConfig({
+  test: {
+    globals: true,
+    environment: "./e2e-test/vitest-environment-knex.ts",
+    include: ["./e2e-test/**/*.spec.ts"],
+    poolOptions: {
+      threads: {
+        singleThread: true,
+        useAtomics: true
+      }
+    }
+  },
+  plugins: [tsconfigPaths()] // only if you are using custom tsconfig paths,
+});