Update frontend-web dependencies and implement routing structure

- Added new dependencies: @fontsource-variable/geist, @radix-ui/react-separator, @radix-ui/react-tooltip, date-fns, react-router-dom, and recharts.
- Updated index.html to set the HTML class to "dark" for dark mode support.
- Refactored App component to implement routing with React Router, replacing the previous UI structure with a layout and multiple pages (NetWorth, Debts, Invoices, Clients).
- Enhanced CSS for dark mode and added depth utilities for improved UI aesthetics.
- Expanded Redux store to include net worth, debts, and invoices slices for comprehensive state management.

frontend-web/src/store/store.ts

@@ -1,10 +1,16 @@
 import {configureStore} from '@reduxjs/toolkit';
 import userReducer from './slices/userSlice';
+import netWorthReducer from './slices/netWorthSlice';
+import debtsReducer from './slices/debtsSlice';
+import invoicesReducer from './slices/invoicesSlice';
 
 export const store = configureStore({
   reducer: {
-    user: userReducer
-  }
+    user: userReducer,
+    netWorth: netWorthReducer,
+    debts: debtsReducer,
+    invoices: invoicesReducer,
+  },
 });
 
 export type RootState = ReturnType<typeof store.getState>;