feat: Add key backup reminder. Refactor Toast component to handle dark mode better

src/components/KeyBackupReminder.tsx

@@ -0,0 +1,21 @@
+import { useBackupReminder } from "@app/core/hooks/useKeyBackupReminder";
+import { useDevice } from "@app/core/stores/deviceStore";
+
+export const KeyBackupReminder = (): JSX.Element => {
+  const { setDialogOpen } = useDevice();
+
+  useBackupReminder({
+    suppressDays: 7,
+    message: "We recommend backing up your key data regularly. Would you like to back up now?",
+    onAccept: () => setDialogOpen("pkiBackup", true),
+    cookieOptions: {
+      secure: true,
+      sameSite: 'strict'
+    }
+  });
+
+  return (
+    <>
+    </>
+  );
+};