Add stand-in focus mode draw menu item

lib/controls/focus_mode_menu_item.dart

@@ -0,0 +1,27 @@
+import 'package:flutter/material.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+import 'package:relatica/riverpod_controllers/focus_mode.dart';
+
+class FocusModeMenuItem extends ConsumerWidget {
+  const FocusModeMenuItem({super.key});
+
+  @override
+  Widget build(BuildContext context, WidgetRef ref) {
+    final focusMode = ref.watch(focusModeProvider);
+    final title =
+        focusMode.enabled ? 'Disable Focus Mode' : 'Enable Focus Mode';
+    final update = focusMode.enabled
+        ? FocusModeData(false)
+        : FocusModeData(true,
+            disableTime: DateTime.now().add(Duration(minutes: 2)));
+    return Padding(
+      padding: const EdgeInsets.all(8.0),
+      child: ListTile(
+        title: Text(title),
+        onTap: () {
+          ref.read(focusModeProvider.notifier).setMode(update);
+        },
+      ),
+    );
+  }
+}