add inventory and supply logic

app/Models/Supplier.php

@@ -7,4 +7,16 @@ use App\Models\BaseModel;
 class Supplier extends BaseModel
 {
     protected $table = 'suppliers';
+
+    public $timestamps = true;
+
+    protected $fillable = [
+        'name',
+        'email',
+        'phone',
+        'address',
+        'notes',
+        'created_at',
+        'updated_at',
+    ];
 }

app/Models/SupplyCategory.php

@@ -0,0 +1,18 @@
+<?php
+
+namespace App\Models;
+
+use App\Models\BaseModel;
+
+class SupplyCategory extends BaseModel
+{
+    protected $table = 'supply_categories';
+
+    public $timestamps = true;
+
+    protected $fillable = [
+        'name',
+        'created_at',
+        'updated_at',
+    ];
+}