Add ApiKey service, cleanup old API key methods

https://zube.io/pterodactyl/panel/c/525

app/Models/APIKey.php

@@ -24,16 +24,14 @@
 
 namespace Pterodactyl\Models;
 
+use Sofa\Eloquence\Eloquence;
+use Sofa\Eloquence\Validable;
 use Illuminate\Database\Eloquent\Model;
+use Sofa\Eloquence\Contracts\Validable as ValidableContract;
 
-class APIKey extends Model
+class APIKey extends Model implements ValidableContract
 {
-    /**
-     * Public key defined length used in verification methods.
-     *
-     * @var int
-     */
-    const PUBLIC_KEY_LEN = 16;
+    use Eloquence, Validable;
 
     /**
      * The table associated with the model.
@@ -65,6 +63,32 @@ class APIKey extends Model
      */
     protected $guarded = ['id', 'created_at', 'updated_at'];
 
+    /**
+     * Rules defining what fields must be passed when making a model.
+     *
+     * @var array
+     */
+    protected static $applicationRules = [
+        'memo' => 'required',
+        'user_id' => 'required',
+        'secret' => 'required',
+        'public' => 'required',
+    ];
+
+    /**
+     * Rules to protect aganist invalid data entry to DB.
+     *
+     * @var array
+     */
+    protected static $dataIntegrityRules = [
+        'user_id' => 'exists:users,id',
+        'public' => 'string|size:16',
+        'secret' => 'string',
+        'memo' => 'nullable|string|max:500',
+        'allowed_ips' => 'nullable|json',
+        'expires_at' => 'nullable|datetime',
+    ];
+
     /**
      * Gets the permissions associated with a key.
      *