feat: set up mock data to be used to generate baseline profiles

src/libs/useMockData.ts

@@ -0,0 +1,9 @@
+import { env } from "cloudflare:workers";
+
+/**
+ * Check if mock data should be used based on environment variable
+ * @returns true if USE_MOCK_DATA environment variable is set to "true"
+ */
+export function useMockData(): boolean {
+  return env.USE_MOCK_DATA == "true";
+}