feat: testing mode banner + snapshot storage fields fix

src/shared/store/TestingModeStore/api.ts

@@ -0,0 +1,18 @@
+import { authInstance } from "@shared";
+
+export type TestingModeResponse = {
+  enabled: boolean;
+  updated_at: string;
+};
+
+export const getTestingModeApi = async (): Promise<TestingModeResponse> => {
+  const response = await authInstance.get("/testing-mode");
+  return response.data as TestingModeResponse;
+};
+
+export const setTestingModeApi = async (request: {
+  enabled: boolean;
+}): Promise<TestingModeResponse> => {
+  const response = await authInstance.post("/testing-mode", request);
+  return response.data as TestingModeResponse;
+};