Ability to preload tabs

[FinnPaes]

The new Nova 5 Tab functionality loads the tab's relation data when clicking on the tab.
If you switch from one relation tab (for example a HasMany) to another, there are a few layout shifts as it's loading the tab's content.

Example tab structure:

Tab::group(__('Relations'), [
    MorphToMany::make(__('Shops'), 'shops', ShopResource::class)
        ->searchable(),

    HasMany::make(__('Options'), 'options', ProductOptionResource::class),

    MorphMany::make(__('Activity'), 'activities', ActivityLogResource::class),
]),

In Nova 4 I used eminiarts/nova-tabs's Nova package which already does pre-load every tab. This makes it so there is no layout shifting.
Although I think it would be great if it's optional, for example adding ->preload() to each tab you want to preload.

Tab::group(__('Relations'), [
    Tab::make('Categories', [
        MorphToMany::make(__('Shops'), 'shops', ShopResource::class)
            ->searchable(),
    ])->preload(),

    Tab::make('Options', [
        HasMany::make(__('Options'), 'options', ProductOptionResource::class),
    ])->preload(),

    Tab::make('Categories', [
        MorphMany::make(__('Activity'), 'activities', ActivityLogResource::class),
    ])->preload(),
]),