✅ Add vitest and initial tests

src/tools/server/configurations/tanstack/queryClient.tool.ts

@@ -0,0 +1,10 @@
+import { QueryClient } from '@tanstack/react-query';
+
+export const queryClient = new QueryClient({
+  defaultOptions: {
+    queries: {
+      staleTime: 5 * 60 * 1000, // 5 mins
+      cacheTime: 10 * 60 * 1000, // 10 mins
+    },
+  },
+});

src/tools/server/theme/theme.ts

@@ -0,0 +1,3 @@
+import { MantineProviderProps } from '@mantine/core';
+
+export const theme: MantineProviderProps['theme'] = {};