feat: implement esting suite using Vitest and add to ci

frontend/test/setup.ts

@@ -0,0 +1,17 @@
+import "@testing-library/jest-dom";
+import { IDBFactory } from "fake-indexeddb";
+import { afterAll, afterEach, beforeAll } from "vitest";
+import { server } from "./mocks/server";
+
+/**
+ * faking indexeddb in memory for testing crypto key storage
+ */
+Object.defineProperty(globalThis, "indexedDB", {
+  value: new IDBFactory(),
+  writable: true,
+  configurable: true,
+});
+
+beforeAll(() => server.listen({ onUnhandledRequest: "warn" }));
+afterEach(() => server.resetHandlers());
+afterAll(() => server.close());