fix: review changes

lib/widgets/splitview_dashboard.dart

@@ -0,0 +1,60 @@
+import 'package:flutter/material.dart';
+import 'package:multi_split_view/multi_split_view.dart';
+import 'package:apidash/consts.dart';
+
+class DashboardSplitView extends StatefulWidget {
+  const DashboardSplitView({
+    super.key,
+    required this.sidebarWidget,
+    required this.mainWidget,
+  });
+
+  final Widget sidebarWidget;
+  final Widget mainWidget;
+
+  @override
+  DashboardSplitViewState createState() => DashboardSplitViewState();
+}
+
+class DashboardSplitViewState extends State<DashboardSplitView> {
+  final MultiSplitViewController _controller = MultiSplitViewController(
+    areas: [
+      Area(size: 250, minimalSize: 200),
+      Area(minimalWeight: 0.7),
+    ],
+  );
+
+  @override
+  void initState() {
+    super.initState();
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return MultiSplitViewTheme(
+      data: MultiSplitViewThemeData(
+        dividerThickness: 3,
+        dividerPainter: DividerPainters.background(
+          color: Theme.of(context).colorScheme.surfaceVariant,
+          highlightedColor: Theme.of(context).colorScheme.outline.withOpacity(
+                kHintOpacity,
+              ),
+          animationEnabled: false,
+        ),
+      ),
+      child: MultiSplitView(
+        controller: _controller,
+        children: [
+          widget.sidebarWidget,
+          widget.mainWidget,
+        ],
+      ),
+    );
+  }
+
+  @override
+  void dispose() {
+    _controller.dispose();
+    super.dispose();
+  }
+}