Add RequestTrialLicense function to the plugin API (#17551)

* Add RequestTrialLicense function to the plugin API

* Fix strings IDs

Co-authored-by: Mattermod <mattermod@users.noreply.github.com>

plugin/api.go

@@ -1066,6 +1066,11 @@ type API interface {
 	//
 	// Minimum server version: 5.36
 	PublishPluginClusterEvent(ev model.PluginClusterEvent, opts model.PluginClusterEventSendOptions) error
+
+	// RequestTrialLicense requests a trial license and installs it in the server
+	//
+	// Minimum server version: 5.36
+	RequestTrialLicense(requesterID string, users int, termsAccepted bool, receiveEmailsAccepted bool) *model.AppError
 }
 
 var handshake = plugin.HandshakeConfig{