Add custom collection support for get and all methods (#903)

* Add custom collection support for get and all methods

* Only add get and all when using custom collection

* Use static instead of class name

* Add missing custom collection test with relation

* Use class reference over string

Co-Authored-By: Markus Podar <[email protected]>

* Fix when using class reference

Co-authored-by: Markus Podar <[email protected]>

tests/Console/ModelsCommand/CustomCollection/Models/Simple.php

@@ -0,0 +1,20 @@
+<?php declare(strict_types=1);
+
+namespace Barryvdh\LaravelIdeHelper\Tests\Console\ModelsCommand\CustomCollection\Models;
+
+use Barryvdh\LaravelIdeHelper\Tests\Console\ModelsCommand\CustomCollection\Collections\SimpleCollection;
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\HasMany;
+
+class Simple extends Model
+{
+    public function newCollection(array $models = [])
+    {
+        return new SimpleCollection($models);
+    }
+
+    public function relationHasMany(): HasMany
+    {
+        return $this->hasMany(Simple::class);
+    }
+}