Added LiteLLM to the stack

Development/litellm/tests/proxy_admin_ui_tests/utils/login.ts

@@ -0,0 +1,23 @@
+import { Page, expect } from "@playwright/test";
+
+export async function loginToUI(page: Page) {
+  // Login first
+  await page.goto("http://localhost:4000/ui");
+  console.log("Navigated to login page");
+
+  // Wait for login form to be visible
+  await page.waitForSelector('input[name="username"]', { timeout: 10000 });
+  console.log("Login form is visible");
+
+  await page.fill('input[name="username"]', "admin");
+  await page.fill('input[name="password"]', "gm");
+  console.log("Filled login credentials");
+
+  const loginButton = page.locator('input[type="submit"]');
+  await expect(loginButton).toBeEnabled();
+  await loginButton.click();
+  console.log("Clicked login button");
+
+  // Wait for navigation to complete
+  await page.waitForURL("**/*");
+}