feat(auth): create login api call with basic test coverage and msw mock

src/features/auth/api/calls/login/login.mock.ts

@@ -0,0 +1,27 @@
+import { http, HttpResponse } from "msw";
+import type { AuthData } from "../../../model/types/service";
+import { BASE_URL } from "shared/config";
+import {
+  LOGIN_API_ROUTE,
+  MOCK_EMAIL,
+  MOCK_PASSWORD,
+  MOCK_TOKEN,
+} from "./constants";
+
+const LOGIN_URL = `${BASE_URL}/${LOGIN_API_ROUTE}`;
+
+/**
+ * Msw interceptor. Mocks the login endpoint response.
+ */
+export const loginMock = http.post(LOGIN_URL, async ({ request }) => {
+  const { email, password } = (await request.json()) as AuthData;
+
+  if (email === MOCK_EMAIL && password === MOCK_PASSWORD) {
+    return HttpResponse.json({
+      accessToken: MOCK_TOKEN,
+      user: { id: "1", email },
+    });
+  }
+
+  return HttpResponse.json({ message: "Invalid credentials" }, { status: 401 });
+});