First attemps at using route interception and modals

src/app/groups/[groupId]/expenses/expense-page.tsx

@@ -0,0 +1,19 @@
+import { Card, CardContent, CardHeader, CardTitle } from '@/components/ui/card'
+import { ReactNode } from 'react'
+
+export function ExpensePage({
+  children,
+  title,
+}: {
+  children: ReactNode
+  title: ReactNode
+}) {
+  return (
+    <Card>
+      <CardHeader>
+        <CardTitle>{title}</CardTitle>
+      </CardHeader>
+      <CardContent>{children}</CardContent>
+    </Card>
+  )
+}