added models for stock assets from structures

app/Models/Stock/Asset.php

@@ -0,0 +1,35 @@
+<?php
+
+namespace App\Models\Stock;
+
+use Illuminate\Database\Eloquent\Model;
+
+class Asset extends Model
+{
+    /**
+     * Required scope:
+     * esi-assets.read_corporation_assets.v1
+     */
+
+    //Table Name
+    public $table = 'alliance_asset';
+
+    //Timestamps
+    public $timestamps = false;
+
+    /**
+     * The attributes that are mass assignable
+     * 
+     * @var array
+     */
+    protected $fillable = [
+        'is_blueprint_copy',
+        'is_singleton',
+        'item_id',
+        'location_flag',
+        'location_id',
+        'location_type',
+        'quantity',
+        'type_id',
+    ];
+}