Collection pane scrollbar visibility added to settings

lib/models/settings_model.dart

@@ -5,12 +5,14 @@ import 'package:apidash/consts.dart';
 class SettingsModel {
   const SettingsModel(
       {this.isDark = false,
+      this.alwaysShowCollectionPaneScrollbar = true,
       this.size,
       this.offset,
       this.defaultUriScheme = kDefaultUriScheme,
       this.saveResponses = true});
 
   final bool isDark;
+  final bool alwaysShowCollectionPaneScrollbar;
   final Size? size;
   final Offset? offset;
   final String defaultUriScheme;
@@ -18,6 +20,7 @@ class SettingsModel {
 
   SettingsModel copyWith({
     bool? isDark,
+    bool? alwaysShowCollectionPaneScrollbar,
     Size? size,
     Offset? offset,
     String? defaultUriScheme,
@@ -25,6 +28,8 @@ class SettingsModel {
   }) {
     return SettingsModel(
       isDark: isDark ?? this.isDark,
+      alwaysShowCollectionPaneScrollbar: alwaysShowCollectionPaneScrollbar ??
+          this.alwaysShowCollectionPaneScrollbar,
       size: size ?? this.size,
       defaultUriScheme: defaultUriScheme ?? this.defaultUriScheme,
       offset: offset ?? this.offset,
@@ -34,6 +39,8 @@ class SettingsModel {
 
   factory SettingsModel.fromJson(Map<dynamic, dynamic> data) {
     final isDark = data["isDark"] as bool?;
+    final alwaysShowCollectionPaneScrollbar =
+        data["alwaysShowCollectionPaneScrollbar"] as bool?;
     final width = data["width"] as double?;
     final height = data["height"] as double?;
     final dx = data["dx"] as double?;
@@ -53,6 +60,7 @@ class SettingsModel {
 
     return sm.copyWith(
       isDark: isDark,
+      alwaysShowCollectionPaneScrollbar: alwaysShowCollectionPaneScrollbar,
       size: size,
       offset: offset,
       defaultUriScheme: defaultUriScheme,
@@ -63,6 +71,7 @@ class SettingsModel {
   Map<String, dynamic> toJson() {
     return {
       "isDark": isDark,
+      "alwaysShowCollectionPaneScrollbar": alwaysShowCollectionPaneScrollbar,
       "width": size?.width,
       "height": size?.height,
       "dx": offset?.dx,