feat: Add customer notes functionality and enhance invoice/order models with date fields

app/Models/Note.php

@@ -4,6 +4,7 @@ namespace App\Models;
 
 use Illuminate\Database\Eloquent\Factories\HasFactory;
 use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\BelongsTo;
 
 class Note extends Model
 {
@@ -14,6 +15,12 @@ class Note extends Model
     protected $fillable = [
         'note',
         'customer_id',
+        'service_id',
         'user_id'
     ];
+
+    public function user(): BelongsTo
+    {
+        return $this->belongsTo(User::class, 'user_id');
+    }
 }