Add sortSidebarVisibility field to user settings schema

This update introduces a new field, `sortSidebarVisibility`, to the user settings schema, allowing for more flexible management of sidebar visibility preferences. The field is defined as a mixed type with a default value of an empty object, enhancing the schema's capabilities for user customization.

src/database/schemas/misc/usersettings.schema.js

@@ -16,6 +16,10 @@ const userSettingsSchema = new mongoose.Schema({
       type: Schema.Types.Mixed,
       default: () => ({}),
     },
+    sortSidebarVisibility: {
+      type: Schema.Types.Mixed,
+      default: () => ({}),
+    },
     columnVisibility: { type: Schema.Types.Mixed, default: () => ({}) },
     collapseState: { type: Schema.Types.Mixed, default: () => ({}) },
   },