feat: Add 'Managed Server' boolean field to VPS Server model and form

ow_vm_management/models/vps_server.py

@@ -25,6 +25,7 @@ class VPSServer(models.Model):
         ('stopped', 'Stopped'),
         ('unknown', 'Unknown')
     ], string='State', default='unknown', tracking=True)
+    managed_server = fields.Boolean(string='Managed Server', default=False, tracking=True)
 
     def _compute_access_url(self):
         super()._compute_access_url()

ow_vm_management/views/vps_server_views.xml

@@ -29,6 +29,7 @@
                             <field name="proxmox_server_id"/>
                             <field name="ct_id"/>
                             <field name="vm_id"/>
+                            <field name="managed_server"/>
                         </group>
                     </group>
                 </sheet>