feat: [DX-2198] Migrate stories to widgetbook

optimus_widgetbook/lib/common.dart

@@ -0,0 +1,13 @@
+import 'package:flutter/widgets.dart';
+import 'package:optimus/optimus.dart';
+
+final List<IconData?> exampleIcons = [
+  null,
+  OptimusIcons.mews_logo,
+  OptimusIcons.magic,
+  OptimusIcons.plus,
+  OptimusIcons.delete,
+  OptimusIcons.edit,
+  OptimusIcons.chevron_right,
+  OptimusIcons.chevron_left,
+];

optimus_widgetbook/lib/components/buttons/button.dart

@@ -0,0 +1,57 @@
+import 'package:flutter/widgets.dart';
+import 'package:optimus/optimus.dart';
+import 'package:optimus_widgetbook/common.dart';
+import 'package:widgetbook/widgetbook.dart';
+import 'package:widgetbook_annotation/widgetbook_annotation.dart' as widgetbook;
+
+@widgetbook.UseCase(
+  name: 'Default Style',
+  type: OptimusButton,
+  path: '[Buttons]/Button',
+)
+Widget createDefaultStyle(BuildContext context) {
+  final k = context.knobs;
+
+  final leadingIcon = k.listOrNull(
+    label: 'Leading icon',
+    initialOption: null,
+    options: exampleIcons,
+  );
+  final trailingIcon = k.listOrNull(
+    label: 'Trailing icon',
+    initialOption: null,
+    options: exampleIcons,
+  );
+
+  final showBadge = k.boolean(label: 'Show Badge', initialValue: false);
+  final counter =
+      k.int.slider(label: 'Badge Count', initialValue: 0, max: 110, min: 0);
+
+  return SingleChildScrollView(
+    child: Column(
+      children: OptimusButtonVariant.values
+          .map(
+            (v) => Padding(
+              padding: const EdgeInsets.all(8),
+              child: OptimusButton(
+                onPressed: k.boolean(label: 'Enabled', initialValue: true)
+                    ? () {}
+                    : null,
+                size: k.list(
+                  label: 'Size',
+                  initialOption: OptimusWidgetSize.large,
+                  options: OptimusWidgetSize.values,
+                ),
+                isLoading: k.boolean(label: 'Loading', initialValue: false),
+                variant: v,
+                leadingIcon: leadingIcon,
+                trailingIcon: trailingIcon,
+                counter: showBadge ? counter : null,
+                child: Text(k.string(label: 'Text', initialValue: 'Button')),
+              ),
+            ),
+          )
+          .toList(),
+    ),
+  );
+}