feat(config): add service.enablebotusers flag

config-raw.json

@@ -113,6 +113,11 @@
                     "default_value": "true",
                     "comment": "If true, will allow users to request the complete deletion of their account. When using external authentication methods\nit may be required to coordinate with them in order to delete the account. This setting will not affect the cli commands\nfor user deletion."
                 },
+                {
+                    "key": "enablebotusers",
+                    "default_value": "true",
+                    "comment": "If enabled (default), users can create bot users that interact with Vikunja via the API only. Set to false to disable the feature entirely."
+                },
                 {
                     "key": "maxavatarsize",
                     "default_value": "1024",

pkg/config/config.go

@@ -64,6 +64,7 @@ const (
 	ServiceTestingtoken                   Key = `service.testingtoken`
 	ServiceEnableEmailReminders           Key = `service.enableemailreminders`
 	ServiceEnableUserDeletion             Key = `service.enableuserdeletion`
+	ServiceEnableBotUsers                 Key = `service.enablebotusers`
 	ServiceMaxAvatarSize                  Key = `service.maxavatarsize`
 	ServiceAllowIconChanges               Key = `service.allowiconchanges`
 	ServiceCustomLogoURL                  Key = `service.customlogourl`
@@ -360,6 +361,7 @@ func InitDefaultConfig() {
 	ServiceEnableTotp.setDefault(true)
 	ServiceEnableEmailReminders.setDefault(true)
 	ServiceEnableUserDeletion.setDefault(true)
+	ServiceEnableBotUsers.setDefault(true)
 	ServiceMaxAvatarSize.setDefault(1024)
 	ServiceDemoMode.setDefault(false)
 	ServiceAllowIconChanges.setDefault(true)