Use column text for sorting and filter pills if no $filterNames or $sortNames exist

[fabio-ivona]

This PR aims to define a better default value for filter/sorting pills, by giving precedence on the column text (if exists) over the column name of the model

let's see a use case: in non-english languages db column names often differs from what's displayed to the user, and this is greatly handled by laravel-livewire-tables:

public function columns(): array
{
    return [
        Column::make('Email', 'email')->sortable()->searchable(),
        Column::make('Nome', 'first_name')->sortable()->searchable(),
        Column::make('Cognome', 'last_name')->sortable()->searchable(),
        Column::make('', 'actions'),
    ];
}

but, for filtering and sorting I obtain this:

that's to say the human readable db column name: ucwords(strtr('first_name', ['_' => ' ', '-' => ' '])) // First Name

but, usually, I want the filter pills labels to be equal to the displayed column name:

I know this could solved by defining $filterNames and $sortNames properties, but that's kinda redundant.. as my labels are already written in columns definitions

so I think we can create a "pills label" priority such as

$sortNames[$col] > Column Text > Human Readable Db Column

this can be obtained by changing this:

{{ $sortNames[$col] ?? ucwords(strtr($col, ['_' => ' ', '-' => ' '])) }}

to this:

{{ $sortNames[$col] ?? collect($this->columns())->pluck('text', 'column')->get($col, ucwords(strtr($col, ['_' => ' ', '-' => ' ']))) }}

hope to have well explained the issue and the solution I'm trying to propose

a better solution would be extracting this logic in a method of WithFilter and WithSorting traits, but did not want to change so many lines without your opinion about this

as usual, thumbs up for your great work!

[rappasoft]

Very good thanks!