added relationship between marking and user

added billing_amount and salestax_amount to supplierbooking table

app/User.php

@@ -102,4 +102,8 @@ class User extends Authenticatable implements JWTSubject
         return $this->hasMany(Booking::class);
     }
 
+    public function marking(){
+        return $this->hasOne(Booking::class);
+    }
+
 }