Add option to trigger outgoing webhook if first word starts with trigger word (#3611)

store/sql_webhook_store.go

@@ -34,6 +34,7 @@ func NewSqlWebhookStore(sqlStore *SqlStore) WebhookStore {
 		tableo.ColMap("DisplayName").SetMaxSize(64)
 		tableo.ColMap("Description").SetMaxSize(128)
 		tableo.ColMap("ContentType").SetMaxSize(128)
+		tableo.ColMap("TriggerWhen").SetMaxSize(1)
 	}
 
 	return s
@@ -46,6 +47,7 @@ func (s SqlWebhookStore) UpgradeSchemaIfNeeded() {
 	s.CreateColumnIfNotExists("OutgoingWebhooks", "DisplayName", "varchar(64)", "varchar(64)", "")
 	s.CreateColumnIfNotExists("OutgoingWebhooks", "Description", "varchar(128)", "varchar(128)", "")
 	s.CreateColumnIfNotExists("OutgoingWebhooks", "ContentType", "varchar(128)", "varchar(128)", "")
+	s.CreateColumnIfNotExists("OutgoingWebhooks", "TriggerWhen", "tinyint", "tinyint", "0")
 }
 
 func (s SqlWebhookStore) CreateIndexesIfNotExists() {