feat: custom animated progressbar.

lib/ui/widgets/installerView/gradient_progress_indicator.dart

@@ -0,0 +1,32 @@
+import 'package:flutter/material.dart';
+
+class GradientProgressIndicator extends StatefulWidget {
+  final double? progress;
+  const GradientProgressIndicator({required this.progress, super.key});
+
+  @override
+  State<GradientProgressIndicator> createState() =>
+      _GradientProgressIndicatorState();
+}
+
+class _GradientProgressIndicatorState extends State<GradientProgressIndicator> {
+  @override
+  Widget build(BuildContext context) {
+    return Align(
+      alignment: Alignment.centerLeft,
+      child: AnimatedContainer(
+        duration: const Duration(milliseconds: 500),
+        decoration: BoxDecoration(
+          gradient: LinearGradient(
+            colors: [
+              Theme.of(context).colorScheme.primary,
+              Theme.of(context).colorScheme.secondary,
+            ],
+          ),
+        ),
+        height: 5,
+        width: MediaQuery.of(context).size.width * widget.progress!,
+      ),
+    );
+  }
+}